var xmlHttp;
function showDescription(str){ 
	
	
	xmlHttp=GetXmlHttpObject();
	if (xmlHttp==null){
 		alert ("Browser does not support HTTP Request");
 	return;
 	}
	
	loadMsg();


	document.getElementById("txtHint").style.visibility = "visible";
	
	var url="getdescription.php";
	url=url+"?q="+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"){ 
	 	document.getElementById("txtHint").innerHTML=xmlHttp.responseText;
	} 
}

function loadMsg(){
	
	hidden = document.getElementById("txtHint");
	hidden.innerHTML = " <img src=\"images/ajax-loader-flower.gif\"/> <span class=\"loading\"> " + " Loading...</span>";
	
}



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;
}