function windowsize(){
//var Oly_width =  body.clientWidth;
var left = Math.floor((document.body.clientWidth - 640 )/2);
//alert(document.body.clientWidth);
//alert(left);

if (left <0) {
	left = 0;
}
document.getElementById("map").style.left = left.toString() + 'px';
//alert(screen.width);

}
	
windowsize();

	
	
	
	function hideDetail(){
		document.getElementById('map').style.display="none";
		return true;
	}
	
    
	function showmap(){  
	document.getElementById("map").style.display = 'block'; 
// 以给定时间隐藏图片	
//	Action=window.setInterval("hideDetail()",15000);
//	Action; 
	}