$(function(){
			
		
									
		$("#hpbtns li").hover(
								
		  function(){	
						var picnum=Number($(this).attr("id"));
						document.body.style.backgroundImage='url(/images/pic'+picnum+'.jpg)';
						document.body.style.backgroundRepeat='no-repeat';
						document.body.style.backgroundPosition='top center';
						document.getElementById("1").style.backgroundImage='url(/images/hpbtnoff.png)';
						document.getElementById("2").style.backgroundImage='url(/images/hpbtnoff.png)';
						document.getElementById("3").style.backgroundImage='url(/images/hpbtnoff.png)';
						document.getElementById("4").style.backgroundImage='url(/images/hpbtnoff.png)';
						this.style.backgroundImage='url(/images/hpbtnon.png)';
						}
		 
	 ).filter(":first").hover();
});