//栏目或子栏目内容目录的图片按比例缩小 
var flag2=false; 
function resizeImage2(ImgD)
{ 
	var image=new Image(); 
	
	//定义允许图片宽度 
	var iwidth = 150; 
	//定义允许图片高度
	var iheight = 150;  
	
	image.src=ImgD.src; 
	if(image.width>0 && image.height>0)
	{ 
		flag2=true; 
		if(image.width/image.height>= iwidth/iheight)
		{ 
			if(image.width>iwidth)
			{   
				ImgD.width=iwidth; 
				ImgD.height=(image.height*iwidth)/image.width; 
			}
			else
			{ 
				ImgD.width=image.width;   
				ImgD.height=image.height; 
			} 
		} 
		else
		{ 
			if(image.height>iheight)
			{   
				ImgD.height=iheight; 
				ImgD.width=(image.width*iheight)/image.height;   
			}
			else
			{ 
				ImgD.width=image.width;   
				ImgD.height=image.height; 
			} 
		 } 
	} 
}