// JavaScript Document
function popup(foto,w,h) {

if(h<270){ h=270; }
if(w<250){ w=250; }
popwindow = window.open("preview.php?f=" + foto+"&h=" + h +"&w=" + w, "foto", "toolbar=0,location=0,status=0,resizable=1,height="+h+",width="+w+",scrollbars=yes");
popwindow.focus();
}