var returnValue;
		function Initialize()
		{
			try
			{
				req=new ActiveXObject("Msxml2.XMLHTTP");
			}
			catch(e)
			{
				try
				{
					req=new ActiveXObject("Microsoft.XMLHTTP");
				}
				catch(oc)
				{
					req=null;
				}
			}

			if(!req&&typeof XMLHttpRequest!="undefined")
			{
				req=new XMLHttpRequest();
			}

		}
			
		function chkDuplicatValue(url)
		{
			//alert(url);
			if(url.length>0)
			{
				Initialize();
																			
				req.onreadystatechange = Process;
				req.open("GET", url, false);				
				req.send(null);									
			}
			return returnValue;			
		}		
		
		function Process()
		{
			if (req.readyState == 4)
			{
				if (req.status == 200)
				{
					if(req.responseText!="")
					{
						returnValue=req.responseText;							
					}
				}
			}
		}