//page loading

function getUsername() {
	
	var username=document.getElementById('username').value;
	var page='ajax/getusernames.asp?username=' + username + '&r='+getrand();
	
	ajaxpage(page,'quick-product-addition');
}

function ajaxpage(url, divid){

	var page_request = false;
	
	if (window.XMLHttpRequest) // if Mozilla, Safari etc
	page_request = new XMLHttpRequest();
	else if (window.ActiveXObject){ // if IE
	try {
	page_request = new ActiveXObject("Msxml2.XMLHTTP");
	} 
	catch (e){
	try{
	page_request = new ActiveXObject("Microsoft.XMLHTTP");
	}
	catch (e){}
	}
	}
	else
	return false;
	
	page_request.onreadystatechange=function(){loadpage(page_request, divid);}
	
	page_request.open('GET', url, true);
	page_request.send(null);
	
}

function loadpage(page_request, containerid){
	if (page_request.readyState == 4 && (page_request.status==200 || window.location.href.indexOf("http")==-1)) {
		var returnval=page_request.responseText;
		if(returnval=='duplicate') {
			tooltip();
		}
	}
}

function getrand() {
	return (Math.floor(10000*Math.random()));
}