function highlight(me){
	fullname=me.src
	gifindex=fullname.indexOf('.gif')
	mainname=fullname.substr(0,gifindex)
	highlightname=mainname+'-h.gif';
	me.src=highlightname;
}

function lowlight(me){
	fullname=me.src
	gifindex=fullname.indexOf('-h.gif')
	mainname=fullname.substr(0,gifindex)
	lowlightname=mainname+'.gif';
	me.src=lowlightname;
}

function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		pre_mnu_first_h = newImage('images/mnu-first-h.gif');
		pre_mnu_first_h = newImage('images/mnu-about-h.gif');
		pre_mnu_first_h = newImage('images/mnu-contact-h.gif');
		pre_mnu_first_h = newImage('images/mnu-others-h.gif');
		pre_mnu_first_h = newImage('images/mnu-messages-h.gif');
		pre_mnu_first_h = newImage('images/mnu-questionnair-h.gif');
		pre_mnu_first_h = newImage('images/mnu-newsgroup-h.gif');
		preloadFlag = true;
	}
}