// JavaScript Document
//网页背景
window.onresize=bgsize;
function bgsize(){
	var bgleft;
	var winsize=document.documentElement.clientWidth;
	if(winsize%2==0 && parseInt(winsize)>1003){
		bgleft=Math.floor((parseInt(winsize)-1031)/2);
		document.body.style.background="url(images/public/bg.gif) repeat-y "+bgleft+"px 0px";
	}else{
		document.body.style.background="url(images/public/bg.gif) repeat-y center 0px";
	}
}
bgsize();