var thisnav = '';
/*
General image swap function
*/
function imgSwap(id, src) {
if (document.getElementById(id)) {
document.getElementById(id).setAttribute('src', src);
}
}
/*
Swap top nav image and text link underline
*/
function topRoll(id, over) {
(over || id == thisnav) ? over = '_over' : over = '';
imgSwap(id, 'images/header_'+id+over+'.gif');
}
function showheaderimages() {
originaldate=new Date(1047342672987);
random=true;
increments=1*365*24*60*60*1000; // Increments in years/ days/ hours/ minutes/ seconds/ milliseconds
var myhtml= new Array
(
' |  |  | ',
' |  |
 | ',
' |  |
 | ',
' |  |
 | '
);
if (random) htmlnumber=Math.round( (myhtml.length-1) * Math.random())
else
{
thedate=new Date();
htmlnumber=(Math.round((thedate.getTime() - originaldate.getTime()) / increments)) % (myhtml.length);
}
whichhtml=myhtml[htmlnumber];
document.write(whichhtml);
}