function TerraTabs(DefaultTabName)
{
	this.useImages=false;
	this.ImagePath="";
	this.TabContenClass="TabContent";
	this.selectedTabClass="SelectedTab";
	this.TabClass="NonSelectedTab";
	this.TabNamePrefix="img";
	

	this.MM_swapImgRestore = function() { 
	  	var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
	}

	this.MM_preloadImages = function () {
		var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
	    	var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    		if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
	}

	this.MM_findObj = function (n, d) { 
  		var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    		d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  		if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  		for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document); return x;
	}

	this.MM_swapImage = function () {
  		var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   		if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
	}

	this.showactivetab = function (defaultmatch)
	{
		if(this.useImages)
			this.MM_swapImgRestore();
				
		var foundmatch = false;
		var tabcontents = this.getElementsByStyleClass(this.TabContenClass);
		var UrlTabNames = this.getUrlCurrentTab();
		
		for (i=0;i<tabcontents.length;i++)
		{
			for (j=0;j<UrlTabNames.length;j++)
			{
				if(tabcontents[i].id==UrlTabNames[j])
				{
					tabcontents[i].style.display='block';
					foundmatch = true;
					if(this.useImages)
						this.MM_swapImage(this.TabNamePrefix+UrlTabNames[j],'',this.ImagePath+UrlTabNames[j]+'_active.gif',1)		
					else{
						var imgs =document.getElementsByName(this.TabNamePrefix+UrlTabNames[j])
						for (k=0;k<imgs.length;k++)
							imgs[k].className = this.selectedTabClass;
						//	imgs[k].class =this.selectedTabClass;
					}
						
				}
				else
				{
					if(this.useImages)
					{	}
					else{
						var imgs =document.getElementsByName(this.TabNamePrefix+tabcontents[i].id)
						for (k=0;k<imgs.length;k++)
							imgs[k].className =this.TabClass;
					}
					tabcontents[i].style.display='none';
				}	
			}	
		}
		
		if (foundmatch == false)
		{
			var defaultElement = document.getElementById(defaultmatch);
			defaultElement.style.display='block';
			if(this.useImages){
				MM_swapImage(this.TabNamePrefix+defaultmatch,'',this.ImagePath+UrlTabNames[j]+'_active.gif',1);		
			}
			else{
				var imgs =document.getElementsByName(this.TabNamePrefix+defaultmatch)
				for (k=0;k<imgs.length;k++)
					imgs[k].className =this.selectedTabClass;
			}
			
		}
	}
	
	this.settab = function (tabname)
	{	
		if(this.useImages)
			this.MM_swapImgRestore();
			
		var tabcontents = this.getElementsByStyleClass(this.TabContenClass);
		for (i=0;i<tabcontents.length;i++)
		{
			tabcontents[i].style.display='none';
			var imgs =document.getElementsByName(this.TabNamePrefix+tabcontents[i].id)
			for (k=0;k<imgs.length;k++)
				imgs[k].className  =this.TabClass;
			
		}
			
		var defaultElement = document.getElementById(tabname);
		defaultElement.style.display='block';
		
		if(this.useImages)
			this.MM_swapImage(this.TabNamePrefix+tabname,'',this.ImagePath+UrlTabNames[j]+'_active.gif',1)		
		else{
			var imgs =document.getElementsByName(this.TabNamePrefix+tabname)
			for (k=0;k<imgs.length;k++)
				imgs[k].className  =this.selectedTabClass;
		}
	}
	
	this.getUrlCurrentTab = function()
	{
		var vars = [], hash;
		var hashes = window.location.href.slice(window.location.href.indexOf('#') + 1).split('#');
		for(var i = 0; i < hashes.length; i++)
		{
			hash = hashes[i].split('=');
			vars.push(hash[0]);
			vars[hash[0]] = hash[1];
		}
		return vars;
	}
		
	

	this.getElementsByStyleClass = function (className) {
  		var all = document.all ? document.all :
    			document.getElementsByTagName('*');
  		var elements = new Array();
  		for (var e = 0; e < all.length; e++)
    			if (all[e].className == className)
      		elements[elements.length] = all[e];
  		return elements;
	}
	
	this.showactivetab(DefaultTabName);
}