function Hide(that,img)
{
if(that.style.display=='none')
{
   that.style.display="block";
   img.src="http://www.shikma.org.il/GenerateImages/DivExpand.gif";
   }
else
{
    that.style.display="none";
    img.src="http://www.shikma.org.il/GenerateImages/DivColapse.gif";
}
}