function initPicRotation() {
	cels = [document.s0, document.s1, document.s2, document.s3];
	celPicCounts = [6,5,6,7]; // number of pics in each cel
	celPicNums = [0,0,0,0]; // current pic num for each cel
	allCelsImages = new Array();
	for(celNum=0; celNum < cels.length; celNum++) {
		celImages = new Array();
		for(imgNum=0; imgNum < celPicCounts[celNum]; imgNum++) {
			celImages[imgNum] = new Image();
			celImages[imgNum].src = "images/Home_Buttons/nav_cel_" + celNum + "-" + imgNum + ".jpg";
		}
		allCelsImages[celNum]=celImages;
	}
	setInterval('rotatePic()', 1250);
}
function rotatePic() {
	celNum = Math.round(Math.random()*(cels.length-1));
	if(celPicNums[celNum]<(celPicCounts[celNum]-1)) {
		celPicNums[celNum]++;
	} else {
		celPicNums[celNum]=0;
	}
	imgNum=celPicNums[celNum];
	cels[celNum].src = allCelsImages[celNum][imgNum].src;
}