function OutGif(imgSrc) {
document.images[imgSrc].src = "Images/"+ imgSrc + ".gif";
}

function OverGif(imgSrc) {
document.images[imgSrc].src = "Images/"+ imgSrc + "_ov.gif";
}

function OutJpg(imgSrc) {
document.images[imgSrc].src = "Images/"+ imgSrc + ".jpg";
}

function OverJpg(imgSrc) {
document.images[imgSrc].src = "Images/"+ imgSrc + "_ov.jpg";
}

function popup(theURL,winName,features) {
window.open(theURL,winName,features);
}

function open_window(url,w,h)
{
window.open(url,"win",'toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars=0,resizable=0,width=' + w + ',height=' + h + ',top=50,left=50')
}