// JavaScript Document

var b='hm';
var li = 'home';

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) {
			if (changeImages.arguments[i] != li) {
				document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
			}
		}
	}
}

function lockImages() {
	var t= li;
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<lockImages.arguments.length; i+=2) {
			document[lockImages.arguments[i]].src = lockImages.arguments[i+1];
			li = lockImages.arguments[i];
		}
		changeImages(t, 'images/'+t+'.gif');
	}
}

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		home_over = newImage("images/home-over.gif");
		services_over = newImage("images/services-over.gif");
		buytitle_over = newImage("images/buytitle-over.gif");
		bios_over = newImage("images/bios-over.gif");
		faq_over = newImage("images/faq-over.gif");
		resources_over = newImage("images/resources-over.gif");
		apply_over = newImage("images/apply-over.gif");
		fees_over = newImage("images/fees-over.gif");
		preloadFlag = true;
	}
}

function bar(t) {
	document.getElementById('text_'+b).style.visibility = 'hidden';
	document.getElementById('pic_'+b).style.visibility = 'hidden';
	document.getElementById('title_'+b).style.visibility = 'hidden';
	document.getElementById('text_'+t).style.visibility = 'visible';
	document.getElementById('pic_'+t).style.visibility = 'visible';
	document.getElementById('title_'+t).style.visibility = 'visible';
	document.getElementById('apply_table').style.visibility = 'hidden';	
	document.getElementById('fees_table').style.visibility = 'hidden';
	if (t == 'bt') {
		lockImages('apply', 'images/apply-over.gif'); 
		tab('apply');
	}

	b=t;
}

function tab(t) {
	switch (t) {
	case 'apply':
		document.getElementById('apply_table').style.visibility = 'visible';	
		document.getElementById('fees_table').style.visibility = 'hidden';
	break;
	case 'fees':
		document.getElementById('apply_table').style.visibility = 'hidden';
		document.getElementById('fees_table').style.visibility = 'visible';	
	break;
	}
}