function showmsg(str)
{  
	    if(str=='thisgroup')
		{
	      if(document.getElementById(str).style.display=='block')
			  {document.getElementById(str).style.display='none';
			  document.image1.src="public/images/plus-sign.gif";
			  }
		 else{document.getElementById(str).style.display='block';	  
		     }
        }
}