preload('gfx/top_email_anim.gif', 'gfx/top_email_anim2.gif');

function preload()
{
	preloadArray = new Array();

	for(var x=0; x<preload.arguments.length; x++)
	{
		preloadArray[x] = new Image();
		preloadArray[x].src = preload.arguments[x];
	}
}

function swap(imgName, src)
{
	if(!document.images[imgName]) return; //You may want to comment this out for debugging
	document.images[imgName].src = src;
}