function mouseOver(cell, theClass) {
 if(theClass == "initial")
  cell.className = "hover";
}
function mouseOut(cell, theClass) {
 if(theClass == "hover")
  cell.className = "initial";
}
function openNewWindow(file, type, width, height) {
 newWindowSpecs = 'top=10,left=10,width=' + (width + 20) + ',height=' +
  (height + 30) + ',scrolling=0,status=0,toolbars=0';
 window.open("display.php?"+type+"="+file,"image",newWindowSpecs);
}