var dw_fontSizerDX = {
	sizeUnit:      "px",
	defaultSize:   12, // Body text size.
	maxSize:       14,
	minSize:       10,
	queryName:     "",   // name to check query string for when passing size in URL
	queryNum:      true,       // check query string for number only (eg. index.html?18 )
	adjustList:		[],
	setDefaults:	function(unit,dflt,mn,mx,sels){
							this.sizeUnit=unit;
							this.defaultSize=dflt;
							this.maxSize=mx;
							this.minSize=mn;
							if(sels)this.set(dflt,mn,mx,sels);
						},
	set:				function(dflt,mn,mx,sels){
							var ln=this.adjustList.length;
							for(var i=0;sels[i];i++){
								this.adjustList[ln+i]=[];
								this.adjustList[ln+i]["sel"]=sels[i];
								this.adjustList[ln+i]["dflt"]=dflt;
								this.adjustList[ln+i]["min"]=mn||this.minSize;
								this.adjustList[ln+i]["max"]=mx||this.maxSize;
								this.adjustList[ln+i]["ratio"]=this.adjustList[ln+i]["dflt"]/this.defaultSize;
							}
						},
	init:				function(){
							if(!document.getElementById||!document.getElementsByTagName||!dw_fontSizerDX.ready)return;
							var size,sizerEl,i;
							size=getValueFromQueryString(this.queryName,this.queryNum);
							if(isNaN(parseFloat(size))||size>this.maxSize||size<this.minSize){
								size=getCookie("fontSize");
								if(isNaN(parseFloat(size))||size>this.maxSize||size<this.minSize){
									size=this.defaultSize;
								}
							}
							this.curSize=this.defaultSize;
							sizerEl=document.getElementById('sizer');
							if(sizerEl)sizerEl.style.display="block";
							if(this.adjustList.length==0){
								this.setDefaults(this.sizeUnit,this.defaultSize,this.minSize,this.maxSize,['body','td']);
							}
							if(size!=this.defaultSize)this.adjust(size-this.defaultSize);
						},
	adjust:			function(n){
							if(!this.curSize||!dw_fontSizerDX.ready)return;
							var alist,size,list,i,j;
							if(n>0){
								if(this.curSize+n>this.maxSize)n=this.maxSize-this.curSize;
							}else if(n<0){
								if(this.curSize+n<this.minSize)n=this.minSize-this.curSize;
							}if(n==0){ return; }
							this.curSize+=n;
							//window.status=this.curSize; 
							alist=this.adjustList;
							for(i=0;alist[i];i++){
								size=this.curSize*alist[i]['ratio'];
								size=Math.max(alist[i]['min'],size);
								size=Math.min(alist[i]['max'],size);
								list=dw_getElementsBySelector(alist[i]['sel']);
								for(j=0;list[j];j++){
									list[j].style.fontSize=size+this.sizeUnit;
								}
							}
							setCookie("fontSize",this.curSize,180,"/");
						},
	reset:			function(){
							if(!this.curSize||!dw_fontSizerDX.ready)return;
							var alist=this.adjustList,list,i,j;
							for(i=0;alist[i];i++){
								list=dw_getElementsBySelector(alist[i]['sel']);
								for(j=0;list[j];j++){
									list[j].style.fontSize='';
								}
							}
							this.curSize=this.defaultSize;
							deleteCookie("fontSize","/");
						}
	};
	
	
	function dw_getElementsBySelector(selector){
		if(!document.getElementsByTagName)return[];
		var nodeList=[document],tokens,bits,list,col,els,i,j,k;
		selector=selector.normalize();
		tokens=selector.split(' ');
		for(i=0;tokens[i];i++){
			if(tokens[i].indexOf('#')!=-1){
				bits=tokens[i].split('#');
				var el=document.getElementById(bits[1]);
				if(!el)return[];
				if(bits[0]){
					if(el.tagName.toLowerCase()!=bits[0].toLowerCase())return[];
				}
				for(j=0;nodeList[j];j++){
					if(nodeList[j]==document||dw_contained(el,nodeList[j]))nodeList=[el];
					else return[];
				}
			}else if(tokens[i].indexOf('.')!=-1){
				bits=tokens[i].split('.');
				col=[];
				for(j=0;nodeList[j];j++){
					els=dw_getElementsByClassName(bits[1],bits[0],nodeList[j]);
					for(k=0;els[k];k++){
						col[col.length]=els[k];
					}
				}
				nodeList=[];
				for(j=0;col[j];j++){
					nodeList.push(col[j]);
				}
			}else{
				els=[];
				for(j=0;nodeList[j];j++){
					list=nodeList[j].getElementsByTagName(tokens[i]);
					for(k=0;list[k];k++){
						els.push(list[k]);
					}
				}
				nodeList=els;
			}
		}
		return nodeList;
	};
	
	function dw_getElementsByClassName(sClass,sTag,oCont){
		var result=[],list,i;
		var re=new RegExp("\\b"+sClass+"\\b","i");
		oCont=oCont?oCont:document;
		if(document.getElementsByTagName){
			if(!sTag||sTag=="*"){
				list=oCont.all?oCont.all:oCont.getElementsByTagName("*");
			}else{
				list=oCont.getElementsByTagName(sTag);
			}
			for(i=0;list[i];i++)
				if(re.test(list[i].className))result.push(list[i]);
		}
		return result;
	};
				
	function getValueFromQueryString(varName,bReturn){
		var val="";
		if(window.location.search){
			var qStr=window.location.search.slice(1);
			var ar=qStr.split("&");
			var get=[],ar2;
			for(var i=0;ar[i];i++){
				if(ar[i].indexOf("=")!=-1){
					ar2=ar[i].split("=");
					get[ar2[0]]=ar2[1];
				}
			}
			val=get[varName];
			if(!val&&bReturn){
				val=qStr;
			}
		}
		return val;
	};
	
	function dw_contained(oNode,oCont){
		if(!oNode)return;
		while(oNode=oNode.parentNode)
			if(oNode==oCont)return true;
		return false;
	};
		
	if(!Array.prototype.push){
		Array.prototype.push=			function(){
													for(var i=0;arguments[i];i++)
														this[this.length]=arguments[i];
													return this[this.length-1];
												}
	};
	
	
	String.prototype.normalize=	function(){
												var re=/\s\s+/g;
												return this.trim().replace(re," ");
											};
											
	String.prototype.trim=			function(){
												var re=/^\s+|\s+$/g;
												return this.replace(re,"");
											};
	
	dw_fontSizerDX.ready=true;