_ck_

<html><!-- demo of how background images kill Firefox (Gecko) dhtml performance -->
<head><style>body {background: url(http://www.bbc.co.uk/home/release-19-2/img/gradient_bg.gif);} table {background:#fff; font:15px arial; white-space:nowrap;}</style></head>
<body  onload="collapsetable()" onkeypress="collapsecount=10" onmousedown="collapsecount=10">

<p>Rendering benchmark (Gecko background image performance bug). This will open and close a table 5 times, as fast as possible</p>
<script type="text/javascript">
t0 = new Date(); collapsecount=0;

// let's make a few fake tables
for (var x=0;x<=2;x++) {
document.write("<table border='1' align='center' id='benchmark"+x+"'>");
for (var y=1;y<=50;y++) {document.write("<tr><td align='right'>"+y+"</td><td><a href='#'>Lorem ipsum dolor sit amet, consectetur adipisicing elit,</a></td><td><a href='#'>sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.</a></td></tr>");}
document.write("</table><br>");}

function collapsetable() {
tablerows=document.getElementById('benchmark0').rows;
collapseposition=tablerows.length;
if (tablerows[collapseposition-1].style.display) {collapse="";} else {collapse="none";}
collapserow();
}

function collapserow() {
collapseposition--;
if (collapseposition>-1) {tablerows[collapseposition].style.display=collapse; setTimeout("collapserow()",0);}
else {collapsecount++; if (collapsecount<11) {collapsetable();} else {var t1 = new Date(); document.body.innerHTML=((t1.getTime()-t0.getTime())/1000+" seconds");}}
}

</script>
</table></body></html>