function hide_show(evt) {
   evt = (evt) ? evt : event;
   var target = (evt.target) ? evt.target : evt.srcElement;
   var block = document.getElementById("survey");
   var block2 = document.getElementById("consult");
   if (target.id == "survey-option") {
	 //block2.style.display = "none"
	 block.style.display = "block";
   } 
   if (target.id == "consult-option") {
	 block.style.display = "none";
	 //block2.style.display = "block";
   } 
 }