function open_img(el,w,h){
var img = new Image();
img.src = el.getAttribute("href");
if(!w)w=img.width;
if(!h)w=img.height;
var html = ''+img.src+'
0)html += ' width="'+w+'" height="'+h+'"';
html +='/>';
var blank=window.open("","_blank","left=10,top=10,menubar=0,scrollbars=0,resizable=1,location=0,toolbar=0,status=0,width="+w+",height="+h);
blank.document.write(html);
return false;
}