function smartRollover() {
	if(document.getElementsByTagName) {
		var images = document.getElementsByTagName("img");

		for(var i=0; i < images.length; i++) {
			if(images[i].getAttribute("src").match("_off."))
			{
				images[i].onmouseover = function() {
					this.setAttribute("src", this.getAttribute("src").replace("_off.", "_on."));
				}
				images[i].onmouseout = function() {
					this.setAttribute("src", this.getAttribute("src").replace("_on.", "_off."));
				}
			}
		}
	}
}

if(window.addEventListener) {
	window.addEventListener("load", smartRollover, false);
}
else if(window.attachEvent) {
	window.attachEvent("onload", smartRollover);
}

function flipper(book){
	window.open(book, "screen", "width=1000,height=700");
}

function popup(url){
window.open(url,"pop","width=330,height=450,toolbar=no,location=no,status=no,menubar=no,scrollbars=no,resizable=no");
} 

function ask(url){
window.open(url,"ask","toolbar=no,location=no,status=no,menubar=no,scrollbars=no,resizable=no,width=300,height=208");
}

function copyright(url){
window.open(url,"copyright","toolbar=no,location=no,status=no,menubar=no,scrollbars=yes,resizable=no,width=420,height=500");
}