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

function changeImages() {
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}

function m_out() {
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<m_out.arguments.length; i+=2) {
			if(init_img_name==m_out.arguments[i] && init_img.src)
				document[m_out.arguments[i]].src = init_img.src;
			else
				document[m_out.arguments[i]].src = m_out.arguments[i+1];
		}
	}
}


var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		menu1_about_over = newImage("../images/menu1_about-over.gif");
		menu1_getinv_over = newImage("../images/menu1_getinv-over.gif");
		menu1_scholarship_over = newImage("../images/menu1_scholarship-over.gif");
		menu1_sponsors_over = newImage("../images/menu1_sponsors-over.gif");
		menu1_contact_over = newImage("../images/menu1_contact-over.gif");
		
		menu2_winners_over = newImage("../images/menu2_winners-over.gif");
		menu2_guidelines_over = newImage("../images/menu2_guidelines-over.gif");
		menu2_regions_over = newImage("../images/menu2_regions-over.gif");
		menu2_regadm_over = newImage("../images/menu2_regadm-over.gif");
		menu2_natsymp_over = newImage("../images/menu2_natsymp-over.gif");
		menu2_resources_over = newImage("../images/menu2_resources-over.gif");
		preloadFlag = true;
	}
}

var init_img_name="";
var init_img;

function init_menu(){
	if (init_img_name!="") {
		init_img = eval(init_img_name+"_over");
		document[init_img_name].src = init_img.src;
	}
}