var el="page-body";var bgimg=new Array("http://i41.servimg.com/u/f41/13/71/79/66/bgal110.jpg","http://i41.servimg.com/u/f41/13/71/79/66/bgal210.jpg","http://i41.servimg.com/u/f41/13/71/79/66/bgal310.jpg");var random=Math.round((bgimg.length-1)*Math.random());var cssStr="#"+el+" { background: url("+bgimg[random]+") no-repeat top left } ";var style=document.createElement("style");style.setAttribute("type","text/css");if(style.styleSheet){style.styleSheet.cssText=cssStr}else{var cssText=document.createTextNode(cssStr);style.appendChild(cssText)}document.getElementsByTagName("head")[0].appendChild(style);