function roll(img_name, img_src) {
	// basic image swapping for rollovers
	if (document.images)
	{
		document[img_name].src = img_src;	
	}
}

function centerPopup(pageURL, winName, w, h, scrollYesNo) {
    // new window utility
    var winl = (screen.width - w) / 2;
    var wint = (screen.height - h) / 2;
    var winprops = 'height='+h+',width='+w+',top='+wint+',left='+winl+',scrollbars='+scrollYesNo+',resizable';
    win = window.open(pageURL, winName, winprops);
    win.focus();
}

function noWhere() {
    // do absolutely positively nothing
}