function zoom() {
var width = 1024;
var height = 768;
var img=document.images.hz.src;
img=img.replace('mid','big');
var alt="";
var win=window.open('', '_blank', 'width='+width+', height='+height+', left='+((screen.width-width)/2)+', top='+((screen.height-height)/2)+', toolbar=no, menubar=no, resizable=yes, status=no, location=no, alwaysRaised=yes, scrollbars=no');
win.document.write(''+alt+'
');
}
function showtip (v,file_in_prog) {
var str;
str=v;
document.images.hz.src=str;
newwindow.open_window.value=v;
var divElement = document.getElementById("file_name");
while (divElement.hasChildNodes()) divElement.removeChild(divElement.lastChild);
var docfrag=document.createDocumentFragment()
var mydiv=document.createElement("div")
var divtext=document.createTextNode(file_in_prog)
mydiv.appendChild(divtext)
docfrag.appendChild(mydiv)
document.getElementById("file_name").appendChild(docfrag)
}