function createObject() {
	var request_type;
	var browser = navigator.appName;
	if(browser == "Microsoft Internet Explorer"){
		request_type = new ActiveXObject("Microsoft.XMLHTTP");
	}else{
		request_type = new XMLHttpRequest();
	}
	return request_type;
}

var http = createObject();
var nocache = 0;
function validate(name) {
	document.getElementById('ajaxDiv').innerHTML = '<div style="padding:150px;"><img src="images/ajax-loader.gif"></div>';
	nocache = Math.random();
	http.open('get', 'ajax/php/validation.php?name='+name+'&nocache='+nocache);
	http.onreadystatechange = displayReply;
	http.send(null);
	function displayReply() {
		var divid = 'ajaxDiv';
		if(http.readyState == 4) {
			document.getElementById(divid).innerHTML = http.responseText;
			
		 }
	}
}