function GetXmlHttpObject()
{ 
var objXMLHttp=null
if (window.XMLHttpRequest)
{
objXMLHttp=new XMLHttpRequest()
}
else if (window.ActiveXObject)
{
objXMLHttp=new ActiveXObject("Microsoft.XMLHTTP")
}
return objXMLHttp
}

new_obj=Object();
new_obj.id1='';
new_obj.id2='';
function js_portfolio(id,start)
{	
	document.getElementById("output_portfolio").innerHTML='';
	new_obj.id2=new_obj.id1;
	new_obj.id1=id;
	xmlHttp=GetXmlHttpObject()
	if (xmlHttp==null)
	{
		alert ("Browser does not support HTTP Request")
		return
	} 
	var url = "portfolio_output.php"; 
	url=url+"?cat_id="+id+"&starting="+start
	xmlHttp.onreadystatechange=js_portfolio_1
	xmlHttp.open("GET",url,true)
	xmlHttp.send(null)
} 

function js_portfolio_1() 
{ 
	if(xmlHttp.readyState < 4)
	{
		
	 	document.getElementById("ajax_loading").innerHTML='<img src="images/loading1.gif" class="leftfloat logoimage" >';
	}
	if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
	{ 
		document.getElementById("output_portfolio").innerHTML=xmlHttp.responseText;
		document.getElementById("ajax_loading").innerHTML='';
	 	
		if(new_obj.id2!='')
		{	
			document.getElementById("port"+new_obj.id2).className='serleftmenu';	
			document.getElementById("port"+new_obj.id1).className='serleftmenu1';	
		}
		else
		{	
			document.getElementById("port"+new_obj.id1).className='serleftmenu1';	
		}
	 } 
	 
}