// JavaScript Document

function daxiao(kongjian,daxiao)
{
var e=document.getElementById("div_nr")
var arr=e.getElementsByTagName(kongjian)
for(var i=0;i<arr.length;i++)
{
	if(arr[i].width>daxiao)
	{
		arr[i].width=daxiao;
	}
}
}
	daxiao("img","600")
//daxiao("table","600")