var thumbs = new Array('ph/br4_thumb.jpg','ph/csp3_thumb.jpg','ph/csp8_thumb.jpg');
var counter = 0;

function SwapEm(){
	document.images['swapPic'].src = thumbs[counter];
   counter++;
	if(counter==3)
		counter = 0;
	setTimeout('SwapEm()',2000);
}

function CacheEm(){
	var im = new Image();
	im.src = thumbs[1];
	var im2 = new Image();
	im2.src = thumbs[2];
}