var xmlHttp
function servercheck(str,strname,guidetype)
	{
	if (str.length==0)
		{
		document.getElementById("txtHint").innerHTML="";
		document.getElementById("txtguide").innerHTML="";
		return;
		}
	xmlHttp=GetXmlHttpObject()
	if (xmlHttp==null)
		{
		alert ("Your browser does not support AJAX!");
		return;
		}
	var url="servervalidateajax.php";
	url=url+"?data="+str;
	url=url+"&str_name="+strname;
	if (guidetype=="imgveri"){
	xmlHttp.onreadystatechange=stateChanged;
	}else{
	xmlHttp.onreadystatechange=showguide;
	}
	xmlHttp.open("GET",url,true);
	xmlHttp.send(null);
	}

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

function showguide()
	{
	if (xmlHttp.readyState==4)
		{
		document.getElementById("txtguide").innerHTML=xmlHttp.responseText;
		}
	}
	
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;
	}