//Begin Submenu Hide Function 

function hide(submenu) {
	document.getElementById('submenu_' + submenu).style.visibility = 'hidden';
	document.getElementById('menu_' + submenu).className = '';
}


// Begin Image Preload Function

var preloaded = new Array();
function preload() { 
	for(i=0; i<preload.arguments.length; i++) {
        preloaded[i] = document.createElement('img');
        preloaded[i].setAttribute('src', preload.arguments[i]);
	}
}



// Begin Submenu Show Function 

function show(submenu) {
	document.getElementById('submenu_' + submenu).style.visibility = 'visible';
	document.getElementById('menu_' + submenu).className = 'active';
}



// Begin Swap Function

function swap(gallery, image_number) {
	document.getElementById('main_img').style.backgroundImage = "url('../images/" + gallery + "/img" + image_number + ".jpg')";
}