//JAVASCRIPT FUNCTIONS

function preloader() {
	header_Img_1 = new Image();
	header_Img_1.src = "img/ALPS_header_new_01_roll.png";
	header_Img_2 = new Image();
	header_Img_2.src = "img/ALPS_header_new_02_roll.png";
	header_Img_3 = new Image();
	header_Img_3.src = "img/photo_gallery_roll.png";
}

function swapImageMouseOver(imgID,imgSwap) {
	document.getElementById(imgID).src = imgSwap;
}

function swapImageMouseOut(imgID,imgReturn) {
	document.getElementById(imgID).src = imgReturn;
}

function showLayer(layer) {
	document.getElementById(layer).style.display = "";
}

function hideLayer(layer) {
	document.getElementById(layer).style.display = "none";
}