function switchImg(link,src){
var a = document.getElementById('product_a');
var src = document.getElementById(src);
a.href = src.href;
document.getElementById('product_img').src = link;
}
function preloadImg(link){
image = new Image()
image.src=link;
}
function zoom(zrodlo,w,h)
{
w+=30;
h+=30;
screen_w=screen.availWidth-20;
screen_h=screen.availHeight-40;
if (w>screen_w) w=screen_w;
if (h>screen_h) h=screen_h;
l = (screen_w - w) / 2;
t = (screen_h - h) / 2;
var NewWindow=window.open('', '','width='+w+',height='+h+',toolbar=no,directories=no,menubar=no,locations=no,status=no,scrollbars=yes,resizable=yes,fullscreen=no,left='+l+',top='+t);
NewWindow.document.open();
NewWindow.document.write("\n\nPodglad zdjecia\n\n\n\n\n\n\n![\"\"](+zrodlo+ "\\"kliknij") \n | \n
\n
\n\n\n");
NewWindow.document.close();
NewWindow.focus();
}