function imgsize(obj,maxSize){
	var img=document.getElementById(obj).getElementsByTagName("img");
	for(var i=0; i<img.length;i++){
		if(img[i].width>maxSize){img[i].width=maxSize;img[i].style.width=maxSize;img[i].title="开新窗口查看清晰大图";img[i].style.cursor="pointer";img[i].border=0;img[i].onclick=function(e){window.open(this.src);}}
	}
}
function $(id)
{
	return document.getElementById(id);
}