function HideAndDisplay(ModifyObject,theImage){

//   Table1.style.display="none"
//   Table2.style.display="none"
   if (ModifyObject.style.display=="none")
           {ModifyObject.style.display=""
            theImage.src="images/-1.gif"} 
   else    {ModifyObject.style.display="none"
            theImage.src="images/+1.gif"}
   }