// JavaScript Document
function check()
{
var docF=document.signup;
if(docF.password.value!=docF.re_password.value)
{ 
	docF.re_password.value="";
	inner = document.getElementById("error")
	inner.innerHTML="Password doesnot match!!!";
	inner.style.display ="block";
	inner.style.color="#CC0000"; 
	inner.style.border="#CC0000 1px solid";
}
else
{
	 inner = document.getElementById("error")
	inner.innerHTML="";
	inner.style.display ="none";
}
}

function checkuser() {
	
	var obj      = document.signup;
	var username = obj.username.value;
	var regbutt = obj.Register1;
	
	
		xmlHttp=GetXmlHttpObject();
	if (xmlHttp==null)
  	{
  		alert ("Your browser does not support AJAX!");
  		return;
  	} 
	var url="checkuserexists.php";
	url=url+"?id="+username;
	
	xmlHttp.onreadystatechange=function() 
	{ 
		if (xmlHttp.readyState==4)
		{	
			if(xmlHttp.responseText == 0) {
	
				document.getElementById("usererr").style.width="160px";
				document.getElementById("usererr").style.display="block";
				document.getElementById("usererr").innerHTML="Username already exists";
				regbutt.disabled="disabled";

			}
			else {

				document.getElementById("usererr").style.width="0px";
				document.getElementById("usererr").style.display="none";
				document.getElementById("usererr").innerHTML="";
				regbutt.disabled="";
			}
		}
	};
	xmlHttp.open("GET",url,true);
	xmlHttp.send(null);
}