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()');