function toggleBlock(elementId) {
	var element = document.getElementById(elementId);

	if(element.style.display == '')
	  element.style.display = 'none';
	else
	  element.style.display = '';  
  }
  
  function donot(){
  //nada
  ;}
  
  
  function setClass(elementid,classname){
   var selected = document.getElementById('selectedset').innerHTML;
  	document.getElementById(elementid).className=classname;
  }
  
  function setIndicator(elementid,newclass,defclass,holder){
   var selected = document.getElementById(holder).innerHTML;
	   
	  // alert('changing from '+selected+' to '+elementid);
	   
	   if(selected){
	   
			if(selected == elementid){
			//they clicked on the same indicator, so we don't do anything
			} else {
			// we are changing the set so give the new class to the new indicator
			document.getElementById(elementid).className=newclass;
			//give the default class to the selected set
			document.getElementById(selected).className=defclass;
			//set the selected set holder to the new element id
			document.getElementById(holder).innerHTML=elementid;
		   } 
		   
	   } else {
	   //none selected so set this one to the selected set and change its class
		document.getElementById(holder).innerHTML=elementid;
		document.getElementById(elementid).className=newclass;
	  }
  
  }
  
  
  function clearIndicator(defclass,holder){
	   var selected = document.getElementById(holder).innerHTML;
	   
	  // alert('changing from '+selected+' to '+elementid);
	   
	   if(selected){
			//give the default class to the selected set
			document.getElementById(selected).className=defclass;
			//unset the selected set holder 
			document.getElementById(holder).innerHTML='i0';
	   }
  }  
  
  
  function showBlock(elementId) {
	var element = document.getElementById(elementId);
	element.style.display = '';  
  }
  
  function hideBlock(elementId) {
	var element = document.getElementById(elementId);
	element.style.display = 'none';  
  }
  
  function swapDivs(from, to){
  	  //suck info from a div
	  var sucked = document.getElementById(from).innerHTML;
	  document.getElementById(to).innerHTML = sucked;
  }

  function setDisplayed(id) {
	document.getElementById('displayedimage').innerHTML = id;  
  }