function PicAutoSize(Parent,Width,Height,Flag)
{
	try
	{
		var objs = window.document.getElementById(Parent).getElementsByTagName("img");
	}
	catch(e)
	{
		return;
	
	}
	for(var i=0;i<objs.length;i++)
	{
		SizeChange(objs[i]);
	}
	function SizeChange(obj)
	{
		var OldWidth = obj.width;
		var OldHeight = obj.height;
		switch(Flag)
		{
			case 0:	
				if(OldWidth > Width)
				{
					obj.width = Width;
					obj.height = Math.floor(OldHeight*Width/OldWidth);
				}
				break;
			case 1:
				obj.width = Width;
				obj.height = Height;
				break;
			case 2:	
				if(OldWidth > Width)
				{
					obj.width = Width;
					//obj.height = Math.floor(OldHeight*Width/OldWidth);
				}
				break;
			default :
				break;
		}
	}
}