rendered paste body window.onload=null; function _attach(event){ if(window.addEventListener) window.addEventListener('load', event, false); else if(window.attachEvent) window.attachEvent('onload', event); else window.onload+=event; } function onload(event){ if(event.constructor.toString().indexOf('Array')!=-1) for(i=0; i<event.len; i++) _attach(event[i]); else _attach(event); } function banner(){ var n=Math.floor(Math.random()*8)+1; var body=document.getElementById("body").style; body.backgroundImage='url(img/interior_banner'+n+'.jpg)'; } onload('banner()');