// File             : utils.js
// Programmer       : John Wong
// Copyright (c) Q-Surf Computing Solutions, 2003-05. All rights reserved.
// http://www.qwebeditor.com/

function LTrim(s){var str=new String(s); return str.replace(/^\s*/,""); }
function RTrim(s){var str=new String(s); return str.replace(/\s*$/,""); }
function Trim(str){return LTrim(RTrim(str))}

function IsValidInteger(str){
	var n1 = new String(str)
	for (i = 0; i < n1.length; i ++){
	    if(n1.charAt(i) < "0" || n1.charAt(i) > "9")
	        return false
	}    
	return true
}

function AbsUrl(str) {
	var str=new String(str)
	var re=/^(http|https):\/\//i
	if(re.test(str)){
		return str
	}
	else {
		if (str.charAt(0) == "/") {
			return location.protocol+"//"
				+location.hostname
				+(location.protocol!="http:"&&location.port!=80?":"+location.port:"")
				+str
		}
		else {
			return location.href.substr(0,location.href.lastIndexOf("/"))+"/"+str
		}
	}
}

function DirName(str) {
    var str=new String(str)
    var re=/(.*)\/([^\/]*)$/
    var arr=str.match(re)
    return (arr==null||typeof(arr)=="undefined"||typeof(arr[1])=="undefined")?".":arr[1] 
}
 
function BaseName(str) {
    var str=new String(str)
    var re=/(.*)\/([^\/]*)$/
    var arr = str.match(re)
    return (arr==null||typeof(arr)=="undefined"||typeof(arr[2])=="undefined")?"":arr[2]
}

function HtmlSpecialChars(str){
	var mystr = new String(str);
	var re;
	re=/&/g;
	mystr=mystr.replace(re,"&amp;");
	re=/\"/g;
	mystr=mystr.replace(re,"&quot;");
	re=/</g;
	mystr=mystr.replace(re,"&lt;");
	re=/>/g;
	mystr=mystr.replace(re,"&gt;");
	re=new RegExp(String.fromCharCode(160), "g");
	mystr=mystr.replace(re,"&nbsp;");
	return HtmlSpecialCharsSubset(mystr);
}

/* START MODIFIED BY BRANDON */
function HtmlSpecialCharsSubset(str){
	var mystr = new String(str);
	var re;
	
	/* remove conditional comments */
	re=/<!--(.*?)-->/g;
	mystr=mystr.replace(re,"");
	
	/* allow for line breaks even with long strings of spaces */
	re=/(&nbsp;){2}/g;
	mystr=mystr.replace(re," &nbsp;");
	
	/* replace certain characters with their html entities */
	var symbolLookup = [ [ 174, "&reg;" ],
						[ 162, "&cent;" ],
						[ 163, "&pound;" ],
						[ 165, "&yen;" ],
						[ 169, "&copy;" ],
						[ 171, "&laquo;" ],
						[ 176, "&deg;" ],
						[ 177, "&plusmn;" ],
						[ 181, "&micro;" ],
						[ 182, "&para;" ],
						[ 183, "&middot;" ],
						[ 186, "&ordm;" ],
						[ 187, "&raquo;" ],
						[ 188, "&frac14;" ],
						[ 189, "&frac12;" ],
						[ 190, "&frac34;" ],
						[ 8211, "-" ],
						[ 8212, "--" ],
						[ 8216, "'" ],
						[ 8217, "'" ],
						[ 8220, "&quot;" ],
						[ 8221, "&quot;" ] ];
						
	for ( i = 0; i < symbolLookup.length; i++ ) {
		re=new RegExp(String.fromCharCode(symbolLookup[i][0]), "g");
	    mystr = mystr.replace(re, symbolLookup[i][1]);
	}
	
	return mystr;
}
/* END MODIFIED BY BRANDON */

function IsHtmlText(str){
	var mystr = new String(str)
	var re=/<(p|h1|h2|h3|h4|h5|h6|table|td|tr|ul|ol|li|b|i|u|strong|em|strike|super|sup|big|small|body|html|br|hr|font|blockquote|pre|tt|script|object|embed)/i;
	if(re.test(mystr)) return true
	re=/(&[a-zA-Z]{2,5};|&#[0-9]{1,5};)/i;
	if(re.test(mystr)) return true
	return false
}

function PlainTextToHtml(str){
	var mystr = new String(str)
	var re
	re=/\r\n/g;
	mystr=mystr.replace(re,"<br />");
	re=/\n/g;
	mystr=mystr.replace(re,"<br />");
	re=/\r/g;
	mystr=mystr.replace(re,"<br />");
	re=/  /g;
	mystr=mystr.replace(re," &nbsp;");
	re=/\t/g;
	mystr=mystr.replace(re," &nbsp; &nbsp;");
	return mystr;
}

function HtmlToPlainText(str, strImage){
	var mystr = new String(str)
	var re
	re=/>\r\n/g
	mystr=mystr.replace(re,">");
	re=/>\r/g
	mystr=mystr.replace(re,">");
	re=/>\n/g
	mystr=mystr.replace(re,">");
	re=/\r\n/g
	mystr=mystr.replace(re," ");
	re=/\r/g
	mystr=mystr.replace(re," ");
	re=/\n/g
	mystr=mystr.replace(re," ");
    if(strImage){
		re=/<img[^>]*>|<object[^>]*>|<embed[^>]*>/ig
		mystr=mystr.replace(re,strImage)
    }
	re=/<\/p[^>]*>|<\/h1[^>]*>|<\/h2[^>]*>|<\/h3[^>]*>|<\/h4[^>]*>|<\/h5[^>]*>|<\/h6[^>]*>|<\/blockquote[^>]*>|<\/ul[^>]*>|<\/ol[^>]*>/gi
	mystr=mystr.replace(re,"\n\n")
	re=/<br[^>]*>/gi
	mystr=mystr.replace(re,"\n")
	re=/<li[^>]*>/gi
	mystr=mystr.replace(re,"\n  * ")
	re=/<\/td[^>]*>/gi
	mystr=mystr.replace(re,"  ")
	re=/<hr[^>]*>/gi
	mystr=mystr.replace(re,"\n-------------------------------\n")
	re=/<[^>]*>/gi
	mystr=mystr.replace(re,"")
	// need to convert html entities back to original chars.
	// but not necessary for qwebeditor
	return mystr
}

function CleanWindowsCharset(strValue) {
	var re = new RegExp("(["+String.fromCharCode(
		183, 
		8211, 8212, 8213, 8214, 8215, 
		8216, 8217, 8218, 8219, 8220, 
		8221, 8222, 8223, 8224, 8225,
		8226, 8227, 8228, 8229, 8230)+"])","g") 
	strValue = strValue.replace(re, function($1){
			var str=new String($1)
			switch(str.charCodeAt(0)){
			case 183: return "&middot;"
			case 8211: return "-"
			case 8212: return "--"
			case 8213: return "--"
			case 8214: return "|"
			case 8215: return "-"
			case 8216: return "'"
			case 8217: return "'"
			case 8218: return "'"
			case 8219: return "'"
			case 8220: return '"'
			case 8221: return '"'
			case 8222: return '"'
			case 8228: return "."
			case 8229: return ". ."
			case 8230: return "..."
			}
		})
	return strValue
}

function GetInnerTextById(id){
    if(!document.getElementById) return ""
    var node=document.getElementById(id)
    if(node){
		if(is_ie)return node.innerText
		else{
			var html=document.createRange()
			html.selectNodeContents(node);
			return html.toString();
		}
    }
    return ""
}

function GetAnnoymousFunctionString(str){
	var str2=new String(str)
	var arr=str2.split("\n")
	var newstr=new String()
	for (var i=2;i<arr.length-1;i++){
	    newstr=arr[i]+"\n"
	}
	return "javascript: "+HtmlSpecialChars(Trim(newstr))
}

function GetAttributesStringFromNode(node, basehref, bSafe){
	if(!node || !node.attributes) return ""
	
	var str = new String()
	for (var i = 0; i < node.attributes.length; i ++){
		var attr = node.attributes[i]
		var name = attr.name
		var value = attr.value
		var tagname = node.tagName.toLowerCase()
		
		// invalid name. skip
		if(!name)continue
		name = name.toLowerCase()
		
		// safe html and attribute is "on" handler? skip
		if(bSafe&&name.substring(0,2)=="on")continue
		
		// IE enum. attributes with default values. get rid of them
		if(is_ie){
			if(!value)continue
			if(value=="null")continue
			if(name=="hidefocus"&&value=="false")continue
			if(name=="disabled"&&value=="false")continue
			if(name=="tabindex"&&value=="0")continue
			if(name=="contenteditable"&&value=="inherit")continue
			if(tagname=="script"&&name=="defer"&&value=="false")continue
			if(tagname=="div"&&name=="nowrap"&&value=="false")continue
			if(tagname=="td" || tagname=="th"){
			    if((name=="colspan"||name=="rowspan")&&value=="1")continue
			    if(name=="nowrap"&&value=="false")continue
			}
			if(tagname=="table"){
			    if(name=="cols"&&value=="0")continue
			    if(name=="datapagesize"&&value=="0")continue
			}
			if(tagname=="body"&&name=="nowrap"&&value=="false")continue
			if(tagname=="form"){
			    if(name=="accept-charset"&&value=="UNKNOWN")continue
			    if(name=="enctype"&&value=="application/x-www-form-urlencoded")continue
			}
			if(tagname=="textarea"){
			    if(name=="cols"&&value=="20")continue
			    if(name=="rows"&&value=="2")continue
			    if(name=="readonly"&&value=="false")continue
			    if(name=="wrap"&&value=="soft")continue
			}
			if(tagname=="input"){
				if(name=="start"&&value=="fileopen")continue
				if(name=="readonly"&&value=="false")continue
				if(name=="height"&&value=="0")continue
				if(name=="hspace"&&value=="0")continue
				if(name=="maxlength"&&value > 10000)continue
				if(name=="loop"&&value=="1")continue
				if(name=="checked"&&value=="false")continue
				if(name=="indeterminate"&&value=="false")continue
				if(name=="width"&&value=="0")continue
				if(name=="vspace"&&value=="0")continue
				if(name=="size"&&value=="20")continue
				if(node.type=="radio" || node.type=="checkbox"){
				    if(name=="value"&&value=="on")continue
				}
			}
			if(tagname=="select"){
			    if(name=="multiple"&&value=="false")continue
			    if(name=="size"&&value=="0")continue
			}
			if(tagname=="img"){
			    if(name=="start"&&value=="fileopen")continue
			    if(name=="hspace"&&value=="0")continue
			    if(name=="loop"&&value=="1")continue
			    if(name=="vspace"&&value=="0")continue
			    if(name=="ismap"&&value=="false")continue
			}
			if(tagname=="li"&&name=="value"&&value=="0")continue
			if(tagname=="ol" || tagname=="ul"){
			    if(name=="compact"&&value=="false")continue
			    if(name=="start"&&value=="1")continue
			}
		}
		else {
		    if(name.substring(0,5)=="_moz_")continue
		    if(name=="type"&&value=="_moz")continue
		}
		
		var re=/checked|selected|disabled|multiple/i
		if(re.test(name))
		    str+=" " + name + "=\"" + HtmlSpecialChars(name) + "\""
		else {
		    // convert URL to relative
		    if((name=="src" || name=="href")&&basehref&&basehref.length&&value.substring(0, basehref.length)==basehref)
		        str+=" " + name + "=\"" + HtmlSpecialChars(value.substring(basehref.length)) + "\""
		    else
		        str+=" " + name + "=\"" + HtmlSpecialChars(value) + "\""
		}
	}
	
	// IE does not expose unload and onunload events, and style in attributes collection
	if(is_ie){
		if(node.style&&node.style.cssText){
			// convert all css attribute names to lower case
			var str2 = new String(node.style.cssText)
			var str3 = new String()
			var arr = str2.split(";")
			for (var i = 0; i < arr.length; i ++){
			    var arr2 = arr[i].split(":")
			    str3 += arr2[0].toLowerCase() + ": " + arr2[1] + "; "
			}
			str+=" style=\"" + str3 + "\""
		}
		if(node.onbeforeunload) str+="\nonbeforeunload=\"" + GetAnnoymousFunctionString(node.onbeforeunload) + "\""
		if(node.onload) str+="\nonload=\"" + GetAnnoymousFunctionString(node.onload) + "\""
		if(node.onunload) str+="\nonunload=\"" + GetAnnoymousFunctionString(node.onunload) + "\""
	}
	
	return str
}

function GetInnerHtmlFromNode(node, basehref, bSafe){
    if(!node||!node.childNodes)return ""
    var str = new String()
    for (var i = 0; i < node.childNodes.length; i ++){
        var curNode=node.childNodes[i]
        switch(curNode.nodeType){
        case 1: // element node
            var tagname = curNode.tagName.toLowerCase()
            if(tagname.substring(0,1)=="/")continue
            if(bSafe&&tagname=="script")continue // skip script tag for "safe" html code

            
            if(is_ie){// output linefeed before these opening tags
				switch (tagname){
				case"html":
				case"body":
				case"head":
				case"meta":
	               	str+="\n"
					break
				}
            }

            str+="<" + tagname + GetAttributesStringFromNode(curNode, basehref, bSafe)
            var re=/br|hr|input|img/i
            if(re.test(tagname)){
                str+=" />"
                break
            }

            str+=">"

            // output linefeed after these opening tags
			switch (tagname){
			case"html":
			case"body":
			case"head":
			case"table":
			case"tr":
			case"tbody":
			case"thead":
			case"tfoot":
			case"ul":
			case"ol":
			case"select":
               	str+="\n"
				break
			}
            if(is_ie){
                // IE wont return value of some of the tags from nodeValue
                switch (tagname)
                {
                case"title":
                    str+=document.title
                    break
                case"style":
                case"script":
                    str+=curNode.innerHTML
                    break
                default:
                	var str2 = GetInnerHtmlFromNode(curNode, basehref, bSafe)

					switch (tagname){
					case"div":
					case"p":
					case"h1":
					case"h2":
					case"h3":
					case"h4":
					case"h5":
					case"h6":
					case"li":
						var str3=HtmlToPlainText(str2)
						if(str3.length==0&&!str2.match(/<img/)) str2 += "&nbsp;"
					}                	
                    str+=str2
                    break
                }
            }
            else {
                switch (tagname){
                case"style":
                case"script":
                    str+=curNode.innerHTML
                    break
                default:
                	var str2=GetInnerHtmlFromNode(curNode, basehref, bSafe)
					// better to output a space between empty div tag for insertion pt.    
					if(str2.length==0&&tagname=="div") str2 = "&nbsp;"
                    str+=str2
                    break
                }
            }

            if(is_ie){
				switch (tagname){
				case"html":
				case"body":
				case"head":
                	str+="\n"
					break
				}
            }
            else {
				switch (tagname){
				case"html":
                	str+="\n"
					break
				}
            }

            str+="</"+tagname+">"

			switch (tagname){
			case"html":
			case"body":
			case"head":
			case"title":
			case"div":
			case"p":
			case"h1":
			case"h2":
			case"h3":
			case"h4":
			case"h5":
			case"h6":
			case"blockquote":
			case"ul":
			case"ol":
			case"li":
			case"tr":
			case"td":
			case"tbody":
			case"thead":
			case"tfoot":
			case"option":
            	str+="\n"
			}

            break
        case 3: // text node
            str+=HtmlSpecialChars(curNode.nodeValue)
            break
        case 8: // comment node
            str+="<!--" + HtmlSpecialChars(curNode.nodeValue) + (is_ie ? "\n-->" : "-->")
            break
        }
    }
    return str
}

function HtmlEditGetAttributesStringFromNode(node,basehref,bSafe){
	if(!node||!node.attributes)return""
	var str = new String()
	for (var i = 0; i < node.attributes.length; i ++) {
		var attr = node.attributes[i]
		var name = attr.name
		var value = attr.value
		var tagname = node.tagName.toLowerCase()
		// invalid name. skip
		if(!name)continue
		name = name.toLowerCase()
		if (name == "style" || name == "class")continue
		// safe html and attribute is "on" handler? skip
		if(bSafe&&name.substring(0,2)=="on")continue
		// IE enum. attributes with default values. get rid of them
		if(is_ie) {
			if(!value)continue
			if(value=="null")continue
			if(name=="hidefocus"&&value=="false")continue
			if(name=="disabled"&&value=="false")continue
			if(name=="tabindex"&&value=="0")continue
			if(name=="contenteditable"&&value=="inherit")continue
			if(tagname=="script"&&name=="defer"&&value=="false")continue
			if(tagname=="div"&&name=="nowrap"&&value=="false")continue
			if(tagname=="td" || tagname=="th") {
				if((name=="colspan"||name=="rowspan")&&value=="1")continue
				if(name=="nowrap"&&value=="false")continue
			}
			if(tagname=="table") {
				if(name=="cols"&&value=="0")continue
				if(name=="datapagesize"&&value=="0")continue
			}
			if(tagname=="body"&&name=="nowrap"&&value=="false")continue
			if(tagname=="form") {
				if(name=="accept-charset"&&value=="UNKNOWN")continue
				if(name=="enctype"&&value=="application/x-www-form-urlencoded")continue
			}
			if(tagname=="textarea") {
				if(name=="cols"&&value=="20")continue
				if(name=="rows"&&value=="2")continue
				if(name=="readonly"&&value=="false")continue
				if(name=="wrap"&&value=="soft")continue
			}
			if(tagname=="input") {
				if(name=="start"&&value=="fileopen")continue
				if(name=="readonly"&&value=="false")continue
				if(name=="height"&&value=="0")continue
				if(name=="hspace"&&value=="0")continue
				if(name=="maxlength"&&value > 10000)continue
				if(name=="loop"&&value=="1")continue
				if(name=="checked"&&value=="false")continue
				if(name=="indeterminate"&&value=="false")continue
				if(name=="width"&&value=="0")continue
				if(name=="vspace"&&value=="0")continue
				if(name=="size"&&value=="20")continue
				if(node.type=="radio" || node.type=="checkbox") {
					if(name=="value"&&value=="on")continue
				}
			}
			if(tagname=="select") {
				if(name=="multiple"&&value=="false")continue
				if(name=="size"&&value=="0")continue
			}
			if(tagname=="img") {
				if(name=="start"&&value=="fileopen")continue
				if(name=="hspace"&&value=="0")continue
				if(name=="loop"&&value=="1")continue
				if(name=="vspace"&&value=="0")continue
				if(name=="ismap"&&value=="false")continue
			}
			if(tagname=="li"&&name=="value"&&value=="0")continue
			if(tagname=="ol" || tagname=="ul") {
				if(name=="compact"&&value=="false")continue
				if(name=="start"&&value=="1")continue
			}
		}
		else {
			if(name.substring(0,5)=="_moz_")continue
			if(name=="type"&&value=="_moz")continue
		}
		var re=/checked|selected|disabled|multiple/i
		if(re.test(name))
		    str+=" "+name+"=\""+HtmlSpecialChars(name)+"\""
		else{
		    // convert URL to relative
		    if((name=="src"||name=="href")&&basehref&&basehref.length&&value.substring(0, basehref.length)==basehref)
		        str += " " + name + "=\"" + HtmlSpecialChars(value.substring(basehref.length)) + "\""
		    else
		        str += " " + name + "=\"" + HtmlSpecialChars(value) + "\""
		}
	}
	// IE does not expose unload and onunload events, and style in attributes collection
	if(is_ie){
		if(node.onbeforeunload) str+="\nonbeforeunload=\""+GetAnnoymousFunctionString(node.onbeforeunload)+"\""
		if(node.onload) str+="\nonload=\""+GetAnnoymousFunctionString(node.onload)+"\""
		if(node.onunload) str+="\nonunload=\""+GetAnnoymousFunctionString(node.onunload)+"\""
	}
	return str
}

function GetCleanCode(node){
	var bWord=(typeof(arguments[1])!="undefined"?arguments[1]:false)
    if(!node||!node.childNodes)return""
    var str=""
    for (var i=0;i<node.childNodes.length;i++) {
        var curNode=node.childNodes[i]
        switch(curNode.nodeType){
        case 1: // element node
            var tagname = curNode.tagName.toLowerCase()
            var bURN=(typeof(curNode.tagUrn)!="undefined"&&curNode.tagUrn.length>0)
			var bOpen = false
            if(tagname.length == 0 || tagname.substring(0,1)=="/")continue
            if (tagname!="span" && tagname != "font" && tagname != "b" &&
            	tagname!="strong" && tagname != "i" && tagname != "em" &&
            	tagname!="u" && tagname != "strike" &&
            	tagname!="big" && tagname != "small" &&
            	tagname!="sup" && tagname != "sub" &&
            	tagname.indexOf(":") == -1 && !bURN) {
				bOpen=true
				if(bWord&&tagname=="p")tagname="div"
	            str +="<"+tagname+HtmlEditGetAttributesStringFromNode(curNode)
    	        var re=/br|hr|input|img/i
        	    if(re.test(tagname)){
            	    str+=" />"
                	break
	            }
    	        str+=">"
    	    }
			if(is_ie){
                // IE wont return value of some of the tags from nodeValue
                switch (tagname) {
                case"title":
                    str += document.title
                    break
                case"style":
                case"script":
                    str+=Trim(curNode.innerHTML)
                    break
                default:
                	var str2=GetCleanCode(curNode,bWord)
					switch (tagname){
					case "div":
					case "p":
					case "h1":
					case "h2":
					case "h3":
					case "h4":
					case "h5":
					case "h6":
					case "li":
						var str3=HtmlToPlainText(str2)
						if(str3.length==0&&!str2.match(/<img/))str2+="&nbsp;"
					}                	
                    str+=str2
                    break
                }
            }
            else {
                switch(tagname){
                case "style":
                case "script":
                    str += Trim(curNode.innerHTML)
                    break
                default:
                	var str2 = GetCleanCode(curNode,bWord)
					// better to output a space between empty div tag for insertion pt.    
					if(str2.length==0&&tagname=="div")str2="&nbsp;"
                    str += str2
                    break
                }
            }
			if(bOpen&&tagname.length>0){
	            str+="</"+tagname+">"
	        }
            break
        case 3: // text node
            str+=HtmlSpecialChars(curNode.nodeValue)
            break
        case 8: // comment node
            str+="<!--"+HtmlSpecialChars(curNode.nodeValue)+(is_ie?"\n-->":"-->")
            break
        }
    }
    return str
}

function CreatePopup(bForceDiv){
    if(window.createPopup&&!bForceDiv){
    	// IE way
        var obj=new Object()
        obj.objPopup=window.createPopup()
        obj.bDiv=false
        return obj
    }
    else if(document.createElement){
    	// using DOM to create an abs pos div
        var div=document.createElement("div")
        document.body.appendChild(div)
        var ds=div.style
        ds.position='absolute'
        ds.left='0px'
        ds.top='0px'
        ds.width='1px'
        ds.height='1px'
        ds.visibility='hidden'
        ds.zIndex=10
        var obj=new Object()
        obj.objPopup=div
        obj.bDiv=true
        return obj
    }
    return null
}

function PopupGetContent(obj){
    if(!obj||!obj.objPopup)return
    return (!obj.bDiv)?obj.objPopup.document.body.innerHTML : obj.objPopup.innerHTML
}

function PopupSetContent(obj,content){
    if(!obj||!obj.objPopup)return
    if(!obj.bDiv)
        obj.objPopup.document.body.innerHTML=content
    else
        obj.objPopup.innerHTML=content
}

function PopupShow(obj,left,top,width,height,element,bCenter){
	if(!obj || !obj.objPopup) return
	var newLeft
	var newTop
	newLeft=(bCenter)?((element.offsetWidth-width)/2):left
	newTop=(bCenter)?((element.offsetHeight-height)/2):top
	if(!obj.bDiv)
	    obj.objPopup.show(newLeft,newTop,width+4,height+4,element)
	else{
		newLeft+=getOffsetLeft(element)
		newTop+=getOffsetTop(element)
		if(isNaN(newLeft)) newLeft=0
		if(isNaN(newTop)) newTop=0
		if(newLeft+width>window.innerWidth-20+window.scrollX)
		    newLeft=window.innerWidth-width-20+window.scrollX
		if(newTop+height>window.innerHeight-20+window.scrollY)
		    newTop=window.innerHeight-height-20 +window.scrollY
		var os=obj.objPopup.style
		os.left=newLeft+"px"
		os.top=newTop+"px"
		os.width=width+"px"
		os.height=height+"px"
		os.visibility="visible"
	}
}

function PopupHide(obj){
	if(!obj || !obj.objPopup) return
	if(!obj.bDiv)obj.objPopup.hide()
	else{
		var os=obj.objPopup.style
		os.visibility="hidden"
		os.left="-300px"
		os.top="0px"
		os.width="1px"
		os.height="1px"
	}
}

function getOffsetTop(elm){
	var mOT=elm.offsetTop;
	var mOP=elm.offsetParent;
	while(mOP){
		mOT+=mOP.offsetTop;
		mOP=mOP.offsetParent;
	}
	return mOT;
}

function getOffsetLeft(elm){
    var mOL=elm.offsetLeft;
    var mOP=elm.offsetParent;
    while(mOP){
		mOL+=mOP.offsetLeft
		mOP=mOP.offsetParent
    }
    return mOL;
}

function StyleSheetCreate(doc){
	if(is_gecko){
		var index = doc.styleSheets.length
		var head = doc.getElementsByTagName('head').item(0)
		var mystyle = doc.createElement('style')
		head.appendChild(mystyle)
		// mystyle is a style element object. need the cssstylesheet object
		return doc.styleSheets[index]
	}
	else if(is_ie)
		return doc.createStyleSheet()
}

// url must be a abs url with protocol and domainname
function StyleSheetCreateFromUrl(doc, url){
	if(is_gecko){
		var index = doc.styleSheets.length
		var head = doc.getElementsByTagName('head').item(0)
		var mystyle = doc.createElement('link')
		mystyle.setAttribute('rel','stylesheet')
		mystyle.setAttribute('type','text/css')
		mystyle.setAttribute('href',url)
		head.appendChild(mystyle)
		// mystyle is a style element object. need the cssstylesheet object
		return doc.styleSheets[index]
	}
	else if(is_ie)
	    return doc.createStyleSheet(url)
}

function StyleSheetAddRule(stylesheet,name,rule){
    if(is_gecko||is_safari)
        stylesheet.insertRule(name+"{"+rule+"}",stylesheet.cssRules.length)
    else if (is_ie)
        stylesheet.addRule(name,rule)
}

function StyleSheetRemoveRule(stylesheet,index){
    if(is_gecko||is_safari)
        stylesheet.deleteRule(index)
    else if (is_ie)
        stylesheet.removeRule(index)
}

function StyleSheetRemoveAllRules(stylesheet){
    if(is_gecko||is_safari){
        // dont know why gecko wont allow accessing cssRules for created stylesheet
        // just trying to delete rules until exception is caught
        var e
        var num=stylesheet.cssRules.length
        try{for(var i=0;i<num;i++)StyleSheetRemoveRule(stylesheet,0)}
        catch(e){}
    }
    else if (is_ie) {
        while(stylesheet.rules.length)StyleSheetRemoveRule(stylesheet, 0)
    }
}

function StyleSheetGetRulesArray(stylesheet){
	if(!stylesheet)return null
	return is_ie?stylesheet.rules:stylesheet.cssRules
}

function ObjGetCssText(obj){
	if(!obj)return
	return (is_ie||is_safari)?obj.style.cssText:obj.getAttribute("style")
}
 
function ObjSetCssText(obj,cssText){
	if(!obj)return
	if(is_ie||is_safari){
		obj.style.cssText=cssText
	}
	else {
		SetRemoveAttr(obj,"style",cssText)
	}
}

function AttachEventListener(obj,strEventName,func){
	if(!obj)return false
	if(obj.attachEvent){ // IE
		obj.attachEvent("on"+strEventName,func)
	}
	else if(obj.addEventListener){ // Mozilla
		obj.addEventListener(strEventName,func,false)
	}
	return true
}

function SetRemoveAttr(e,attr,value){
	if(typeof(value)=="undefined"||value==null||value.length==0){
		e.removeAttribute(attr)
	}
	else{
		e.setAttribute(attr,value)
	}
}

function SetSpacingStyle(value){
	return value.replace(/\<p class=\"MsoNormal\"\>/g, "<p class=\"MsoNormal\" Style=\"MARGIN: 0in 0in 0pt\">");
}