// preload and img swap
var sampleon = new Image();
sampleon.src = "images/samplerequest1.gif";

function swapimg(id,img){
	document.getElementById(id).src = "images/"+img;
}

// ad launcher
var newWindow = null;

function closeWin(){
	if (newWindow != null){
		if(!newWindow.closed)
			newWindow.close();
	}
}

function advert(url){
	
	closeWin();
	
	var tools = "resizable,width=390,height=310";
	newWindow = window.open(url, 'newWin', tools);
	newWindow.focus();
}