// JavaScript Document

function DrawImage(ImgD,FitWidth,FitHeight){
	var image=new Image();
	var iwidth = FitWidth; //定义允许图片宽度
	var iheight = FitHeight; //定义允许图片高度
	image.src=ImgD.src;
	if(image.width>0 && image.height>0)
	{
		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;
			}
			
		}
	}
	ImgD.style.display="";
}

function  turnit(ss) 
{
if  ($("#"+ss).is(":visible")==false) 
{$("#"+ss).show();
} 
else 
{$("#"+ss).hide();
} 
} 
function chartsele(obj){
	bbtd.style.display="none";
}
function over(tid) 
{ 
for (var i=1;i<3;i++) 
{ 
eval('chat'+i).className='' 
} 
$(tid).addClass("chathover");
}