if (document.images) {
		a_1 = new Image;
		a_1.src = "images/now4/img_process01.gif";
		a_2 = new Image;
		a_2.src = "images/now4/img_process02.gif";
		a_3 = new Image;
		a_3.src = "images/now4/img_process03.gif";
		a_4 = new Image;
		a_4.src = "images/now4/img_process04.gif";
		a_5 = new Image;
		a_5.src = "images/now4/img_process05.gif";
	}
	
	function showImg(imgname, rollname)
	{
		if (document.images) {
			window.onerror = null;
			document.getElementById(rollname).src=eval(imgname + ".src");
		}
	}