for(i=1;i<=12;i++)
{
	eval("b"+i+"On= new Image()");
	eval("b"+i+"On.src= '../images/about_bios" + i + "_on.gif'");
	eval("b"+i+"Off= new Image()");
	eval("b"+i+"Off.src= '../images/about_bios" + i + ".gif'");
}

function biosRoll(num,state)
{
	eval("document.images['biosNav" + num + "'].src = b" + num + state + ".src");
}