function swapimg(obj,newimg,act){
	x=document.getElementById(obj);
	if(!x.oSrc){
	x.oSrc=x.src;
	}
	if(act){
	  if(!document.swapact){
	    document.swapact=x;
		//alert('act');
	  }
	  else{
		ox=document.swapact;
		ox.src=ox.oSrc;
		document.swapact=x;
	  }
	}
	x.src=newimg;
  }
  
  function swapback(idname){
    obj=document.getElementById(idname);
    //alert(document.swapact)
    if(document.swapact!=obj){
	  obj.src=obj.oSrc;
	}
  }
  
  function setClass(idname,stylename){
	   obj=document.getElementById(idname);
	   obj.className=''+stylename+'';
  }
  
  function hidediv(id) {
    obj = document.getElementsByTagName("div");
    obj[id].style.display = 'none';
}

function showdiv(id) {
    obj = document.getElementsByTagName("div");
    obj[id].style.display = 'block';
}

function showhide(id){
  obj = document.getElementsByTagName("div");
  if(obj[id].style.display=='block'){
    hidediv(id);
  }
  else{
    showdiv(id);
  }
}

function menuover(num){
	
  if(document.actmenu){
    hidediv('menusub'+document.actmenu);
  }
  
  document.actmenu=num;
  showdiv('menusub'+num);
}
  
function menuout(){
  if(document.actmenu){
	hidediv('menusub'+document.actmenu);
  }
}


function showonlygroup(prefix,num){
  plen=prefix.length;
  obj = document.getElementsByTagName("div");
  for(c=0;c<obj.length;c++){
    if(obj[c].id.substr(0,plen)==prefix){
	  if(obj[c].id == ''+prefix +num+''){
		 showdiv(''+obj[c].id+'');
	  }
	  else{
		 hidediv(''+obj[c].id+'');   
	  }
	}
  }
}

function checktest(val,div1,div2){
	if(val=='Winst uit onderneming (geen laatste 3 jaarcijfers aanwezig)' || val=='inkomen uit WAO'){
		showdiv(''+ div1 +'');
		hidediv(''+ div2 +''); 
	}else{ 
		showdiv(''+ div2 +'');
		hidediv(''+ div1 +''); 
	}
	
}