var preloadFlag = false;
		function preloadImages() {
			if (document.images) {
				pre_conventional = newImage('/images/layout/conventional_b.gif');
				preloadFlag = true;
			}
		}
		function newImage(arg) {
			if (document.images) {
				rslt = new Image();
				rslt.src = arg;
				return rslt;
			}
		}
		function changeImagesArray(array) {
			if (preloadFlag == true) {
				var d = document; var img;
				for (var i=0; i<array.length; i+=2) {
					img = null; var n = array[i];
					if (d.images) {img = d.images[n];}
					if (!img && d.getElementById) {img = d.getElementById(n);}
					if (img) {img.src = array[i+1];}
				}
			}
		}
		function changeImages() {
			changeImagesArray(changeImages.arguments);
		}
		function new_window(page) {
			OpenWin = this.open(page, "CtrlWindow", "toolbar=no,menubar=no,location=no,scrollbars=yes,resizable=yes,width=900,height=620");
		}