function zoom(x) {
if (x) { img = x; }
else { img = event.srcElement.src; }
w = event.srcElement.width + 200 ;
h = event.srcElement.height + 200 ;
/*
sw = screen.width/3; 
sh = screen.height/7;
ssw = sw + "px";
ssh = sh + "px";
zo.style.top = ssh;
zo.style.left = ssw;
*/
zoomer.src = img;
zo.style.display = "block";
}
function czoom() {
zo.style.display = "none";
}