window.onload = newWinLinks;

function newWinLinks() {
	for (var i=0; i<document.links.length; i++) {
		if (document.links[i].className == "newWin") {
			document.links[i].onclick = newWindow;
		}
	}
}

function newWindow() {
	var popWindow = window.open(this.href,"productWindow","width=400,height=400");
	popWindow.focus();//bring mindow to front
	return false;//stops HTML loading href in
}