i = 0;  // global variable for showBanner
	
	function showBanner() {
		
		var bannerHeight = 128;
		increment = 10;  // pixels
		delay = 50;  // milliseconds
		bigger(increment);
		i++;
		if (i <(bannerHeight/increment)) {
			t = setTimeout("showBanner()", delay);
		}
	}
	
	function bigger(incr) {
			var banner = document.getElementById("promoBanner");
			var heightString = getStyle(banner, 'height');
			var height = parseInt(heightString.replace("px", ""));
			var newHeight = height + incr;
			banner.style.height = newHeight +'px';
		}
		
		function getStyle(el, cssprop){
			if (el.currentStyle) //IE
				return el.currentStyle[cssprop]
			else if (document.defaultView && document.defaultView.getComputedStyle) //Firefox, etc.
				return document.defaultView.getComputedStyle(el, "")[cssprop]
			else //try and get inline style
				return el.style[cssprop]
}