// JavaScript Document
function validEmail(email)
{
	var filter = /^([A-Za-z0-9_\-\.])+\@([A-Za-z0-9_\-\.])+\.([A-Za-z]{2,4})$/;
	
	if(filter.test(email) == false) {
		alert("Please enter a valid email address");
	}
	
	return filter.test(email);
}

function Advertisement()
{	
	var arraylen = ads.length;
	var randomnumber=Math.floor(Math.random()*arraylen);

	document.getElementById("Banners").innerHTML = ads[randomnumber];
}