aa_on=new Image(79,24);
aa_on.src="../images/menu_1o.gif";
aa_off=new Image(79,24);
aa_off.src="../images/menu_1n.gif";

bb_on=new Image(52,24);
bb_on.src="../images/menu_2o.gif";
bb_off=new Image(52,24);
bb_off.src="../images/menu_2n.gif";

cc_on=new Image(65,24);
cc_on.src="../images/menu_3o.gif";
cc_off=new Image(65,24);
cc_off.src="../images/menu_3n.gif";

dd_on=new Image(103,24);
dd_on.src="../images/menu_4o.gif";
dd_off=new Image(103,24);
dd_off.src="../images/menu_4n.gif";

ee_on=new Image(98,24);
ee_on.src="../images/menu_5o.gif";
ee_off=new Image(98,24);
ee_off.src="../images/menu_5n.gif";

ff_on=new Image(77,24);
ff_on.src="../images/menu_6o.gif";
ff_off=new Image(77,24);
ff_off.src="../images/menu_6n.gif";

function rollIn(imgName)
{
	document[imgName].src = eval(imgName + "_on.src");
}
function rollOut(imgName)
{
	document[imgName].src = eval(imgName+"_off.src");
}