var xmlHttp

function show(str)
{ 
xmlHttp=GetXmlHttpObject()
if (xmlHttp==null)
{
alert ("Browser does not support HTTP Request")
return
} 
var url="exe_select.php"
//url=url+"?n="+name;
//url=url+"&q="+str;

q="q="+str
//alert(url);
//n="n="+name
 //url=url+"&sid="+Math.random()
xmlHttp.onreadystatechange=stateChanged 
//xmlHttp.open('GET',url,true);
//xmlHttp.send(null);

xmlHttp.open('POST',url,true)

	xmlHttp.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
       xmlHttp.setRequestHeader("Content-length", q.length);
	//xmlHttp.setRequestHeader("Content-length", n.length, q.length);
     			// xmlHttp.setRequestHeader("Connection", "close");
    	xmlHttp.send(q);
		//alert(q.length);
			//xmlHttp.send(null)

}

function stateChanged() 
{ 
if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
{ 
document.getElementById("txtHint").innerHTML=xmlHttp.responseText 
} 
} 

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