Making MSIE code compatible with Firefox

[VillageIdiot906]

Can anybody make the following code compatible with Firefox?
At the moment, it only works with MSIE.

Quote:

<script>
// Display Only One Entry

if(location.pathname=="/YOUR EXACT USER NAME HERE"){
var longer = false;
var tds = document.getElementsByTagName('td');
for(i=0; i<tds.length;i++)
{
booga = tds[i].innerHTML.indexOf('blogheader');
if(booga==11){longer=false;break;}
boogie = tds[i].innerHTML.indexOf('javascript');
if(boogie == 19){longer=true;break;}
}
var tables = tds[i].getElementsByTagName('table');
var numBreaks = 0;
var x = 0;
if(longer==true){x=3;}else{x=1}
for(j=x; j<tables.length;j++)
{
numBreaks += tables[j].getElementsByTagName('br').length;
tables[j].style.display='none';
}
var divs = tds[i].getElementsByTagName('div');
for(j=2+(2*1)-2; j<divs.length;j++)
{
divs[j].style.display='none';
}
var breaks = tds[i].getElementsByTagName('br');
for(j=breaks.length-5-numBreaks;j<breaks.length;j++)
{
breaks[j].style.display='none';
}
var horizontals = tds[i].getElementsByTagName('hr');
var j = horizontals.length-1;
horizontals[j].style.display='none';
}
</script>

I would do it myself, but I haven't coded in forever. I forgot all the compatibility issues. Ahaha.