pageLoaded = 0;				// Prevent access to layers until they're loaded

// Set the pageLoaded variable to denote that the layers are ready to be used 
function doLoadProc() {
	pageLoaded = 1;
}

// swapImg - swaps an image for another that has already been preloaded.
function swapImg(imgName, preloadedImgName) {
	document[imgName].src = eval(preloadedImgName).src;
}

function preload(imgSrc) {
	img = new Image();
	img.src = imgSrc;
	return img;
}

function swapStyle(objId, className) {
	document.getElementById(objId).className = className;
}