function ImgAuto(ImgD,ww,hh)
{
	var image=new Image();
	image.src=ImgD.src;
	image.onload = function(){
		if(image.width>0&&image.height>0)
		{
			var rate=(ww/image.width<hh/image.height)?ww/image.width:hh/image.height;
			if(rate<=1)
			{
				ImgD.width=image.width*rate;
				ImgD.height=image.height*rate
			}
			else
			{
				ImgD.width=image.width;
				ImgD.height=image.height;
			}
		}
	};
	image.onload();
}
document.write('<div class="wx_gd" style="margin:30px 0px; text-align:center; width:100%;"><img width="760" src="/v2016/images/wx_gd.jpg" onload="ImgAuto(this,760,200)" /></div>');