var xmlHttp

		function changeTab(str)
		{
			xmlHttp=GetXmlHttpObject()
			if (xmlHttp==null)
			  {
				  alert ("Do not support HTTP Request")
				  return
			  }
			var url="/active_tab.php"
			url=url+"?active="+str
			url=url+"&sid="+Math.random()
			xmlHttp.onreadystatechange=stateChanged
			xmlHttp.open("GET",url,true)
			xmlHttp.send(null)
		}

		function stateChanged()
		{
			if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
			 {
				var my=xmlHttp.responseText.split("||");
				document.getElementById("rezultat").innerHTML=my[0];
			}
		}

		function GetXmlHttpObject()
		{
			var xmlHttp=null;
			try
			 {
				 // Firefox, Opera 8.0+, Safari
				 xmlHttp=new XMLHttpRequest();
			 }
			catch (e)
			 {
				 // Internet Explorer
				 try
				  {
					  xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
				  }
				 catch (e)
				  {
					  xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
				  }
			 }
			return xmlHttp;
		}