// JavaScript Document
document.body.onload = preloadImg();

function preloadImg() {
	var imageObj = new Image();
	
	var preloadImages = new Array();
	preloadImages[0] = "images/bg_topTSALogo.jpg";
	preloadImages[1] = "images/bg_topTSWALogo.jpg";
	
	for(i = 0; i < preloadImages.length; i++) {
		imageObj.src = preloadImages[i];
	}
	//alert("Document is loaded complete!");
}

function overMenu(menuId) {
	var currentMenu;
	var selectedMenu;
	var topPic;
	
	currentMenu = "menu" + menuId;
	selectedMenu = document.getElementById(currentMenu);
	topPic = document.getElementById("topPhoto");
	
	switch(menuId) {
		case 1:
			selectedMenu.src = "images/topNav_TSA_over.gif";
			topPic.src = "images/bg_topTSALogo.jpg";
			break;
		case 2:
			selectedMenu.src = "images/topNav_TSWA_over.gif";
			topPic.src = "images/bg_topTSWALogo.jpg";
			break;
		case 3:
			selectedMenu.src = "images/topNav_ROTK_over.gif";
			topPic.src = "images/bg_topSky.gif";
			break;
		case 4:
			selectedMenu.src = "images/topNav_K&Q_over.gif";
			topPic.src = "images/bg_topSky.gif";
			break;
		default:
			selectedMenu.src = "images/topNav_KERNCup_over.gif";
			topPic.src = "images/bg_topSky.gif";
			break;
	}
}

function outMenu() {
	topPhoto.src = "images/bg_topSky.gif";
	menu1.src = "images/topNav_TSA.gif";
	menu2.src = "images/topNav_TSWA.gif";
	menu3.src = "images/topNav_ROTK.gif";
	menu4.src = "images/topNav_K&Q.gif";
	menu5.src = "images/topNav_KERNCup.gif";
}