[monolithed]

window.onload = function(){
	var theTime = new Date();
	var theHour = theTime.getHours();
	if(theHour >= 18){
		document.body.style.cssText = "background: #000000 url('some1.jpg') 50% 50% no-repeat fixed";
	}
	else{
		document.body.style.cssText = "background: #FFFFFF url('some2.jpg') 50% 50% no-repeat fixed";
	}
}