function buttonOn(imageName) {
	if(document.images) {
		document[imageName].src = eval(imageName+"On.src");
	}
} 
	
function buttonOff(imageName) {
	if(document.images) {
		document[imageName].src = eval(imageName+"Off.src");
	}
}

function popUp(url, winID, width, height, left, top){
	window.open(url, winID,'toolbar=1,location=1,directories=0,status=1,menubar=1,scrollbars=1,resizable=1,width=' + width + ',height=' + height + ',left=' + left +',top=' + top);
}