// Universal image rollover functions

function imghighlight(whichimg) {
	var imgsrc = new String(whichimg.src);
	imgsrc = imgsrc.replace(new RegExp('_off\.','g'),'_on\.');
	whichimg.src = imgsrc;
}
function imgnohighlight(whichimg) {
	var imgsrc = new String(whichimg.src);
	imgsrc = imgsrc.replace(new RegExp('_on\.','g'),'_off\.');
	whichimg.src = imgsrc;
}

// Pop Up
 function popwin(loc,winname,w,h,scroll,resize) {
	var newwin = window.open( loc, winname, "width="+w+",height="+h+",top="+((screen.height - h) / 2)+",left="+((screen.width - w) / 2)+",location=no,scrollbars="+scroll+",menubar=no,toolbar=no,resizable="+resize);
}