function showDiv(object) { 
   document.getElementById(object).style.visibility =  "visible" ;
   document.getElementById(object).style.display =  "block" ;
}

function hideDiv(object) { 
   document.getElementById(object).style.visibility =  "hidden" ;
   document.getElementById(object).style.display =  "none" ;
}

function clearDivs(){ 
   document.getElementById( testimonial1 ).style.visibility =  "hidden" ;
   document.getElementById( testimonial1 ).style.display =  "none" ;
   document.getElementById( testimonial2 ).style.visibility =  "hidden" ;
   document.getElementById( testimonial2 ).style.display =  "none" ;
   document.getElementById( testimonial3 ).style.visibility =  "hidden" ;
   document.getElementById( testimonial3 ).style.display =  "none" ;
   document.getElementById( testimonial4 ).style.visibility =  "hidden" ;
   document.getElementById( testimonial4 ).style.display =  "none" ;
}

function toggleDiv(object) {
   if (document.getElementById(object).style.visibility ==  "hidden" ) {
      document.getElementById(object).style.visibility =  "visible" ;
	  document.getElementById(object).style.display =  "block" ;
   } else {
      document.getElementById(object).style.visibility =  "hidden" ;
      document.getElementById(object).style.display =  "none" ;
   }
}

function toggleDivs(objectA, objectB) {
   if (document.getElementById(objectA).style.visibility ==  "hidden" ) {
      document.getElementById(objectA).style.visibility =  "visible" ;
	  document.getElementById(objectA).style.display =  "block" ;
	  if (document.getElementById(objectB).style.visibility ==  "visible" ) {
	     document.getElementById(objectB).style.visibility =  "hidden" ;
		 document.getElementById(objectB).style.display =  "none" ;
	  }
   } else {
      document.getElementById(objectA).style.visibility =  "hidden" ;
	  document.getElementById(objectA).style.display =  "none" ;
	  if (document.getElementById(objectB).style.visibility ==  "visible" ) {
	     document.getElementById(objectB).style.visibility =  "hidden" ;
		 document.getElementById(objectB).style.display =  "none" ;
      }
   }
}