var go = '';
var chk = '';

function doCompletion() {

	if(window.document.getElementById("regusername").value.length>6){
		document.getElementById("displayError").innerHTML ='';
	
		var url = "./chklogin.php?username=" + escape(window.document.getElementById("regusername").value);
		var req = new XMLHttpRequest();	
			req.onreadystatechange = function() {
				if (req.readyState == 4) {
					go = req.responseXML.getElementsByTagName("id")[0].childNodes[0].nodeValue;
						if(go == 'yes'){
							document.getElementById("displayError").innerHTML = "SORRY USERNAME IS NOT AVAILABLE PLEASE TRY ANOTHER";
							window.document.formsm.userchk.value = "no";
							
						}else{
							window.document.formsm.userchk.value.value = "yes";
							
						}

				}
						
			};

		req.open("GET", url, true);
		req.send(null);
	}
	return false;
}