function DisplayImg(ss,imgname,phome)
{
	if(imgname=="classimg")
	{
		img=todisplay(doclass,phome);
		document.images.classimg.src=img;
	}
	else if(imgname=="cinfoimg")
	{
		img=todisplay(docinfo,phome);
		document.images.cinfoimg.src=img;
	}
	else if(imgname=="ztimg")
	{
		img=todisplay(dozt,phome);
		document.images.ztimg.src=img;
	}
	else if(imgname=="fileimg")
	{
		img=todisplay(dofile,phome);
		document.images.fileimg.src=img;
	}
	else if(imgname=="cjimg")
	{
		img=todisplay(docj,phome);
		document.images.cjimg.src=img;
	}
	else if(imgname=="cotherimg")
	{
		img=todisplay(docother,phome);
		document.images.cotherimg.src=img;
	}
	else
	{
	}
}
function todisplay(ss,phome)
{
	if(ss.style.display=="") 
	{
  		ss.style.display="none";
		theimg="images/add.gif";
	}
	else
	{
  		ss.style.display="";
		theimg="images/noadd.gif";
	}
	return theimg;
}
function turnit(ss,img)
{
	DisplayImg(ss,img,0);
}