//ͼƬµÈ±ÈÀýËõ·Åº¯Êý
function ResizePic(ImgTag,FitWidth,FitHeight)
{
	var image = new Image();
	image.src = ImgTag.src;
	if(image.width>0 && image.height>0)
	{
		if(image.width/image.height >= FitWidth/FitHeight)
		{
			if(image.width > FitWidth)
			{
				ImgTag.width = FitWidth;
				ImgTag.height = (image.height*FitWidth)/image.width;
			}
			else
			{ 
				ImgTag.width = image.width;
				ImgTag.height = image.height;
			}
		}
		else
		{
			if(image.height > FitHeight)
			{
				ImgTag.height = FitHeight;
				ImgTag.width = (image.width*FitHeight)/image.height;
			}
			else
			{
				ImgTag.width = image.width; 
				ImgTag.height = image.height;
			}
		}
	}
}

function checksearch()
{
	if(form1.Key.value=="")
	{
		alert("ÇëÊäÈë¹Ø¼ü×Ö");
		form1.Key.focus();
		return false;
	}
	else
	{
		return true;
	}
}