function switchTab(vNum){
  for(i=0;i<4;i++){
    if(document.getElementById("tab"+i)){
      document.getElementById("tab"+i).style.display = "none";
      document.getElementById("vLink"+i).className = "";
    }
  }
  document.getElementById("vLink"+vNum).className = "active";
  document.getElementById("tab"+vNum).style.display = "inline-block";
}

function switchTab_verhuurder(vNum){
  for(i=0;i<4;i++){
    if(document.getElementById("tab"+i)){
      document.getElementById("tab"+i).style.display = "none";
			document.getElementById("links_tab"+i).style.display = "none";
      document.getElementById("vLink"+i+"0").className = "";
			document.getElementById("vLink"+i+"1").className = "";
			document.getElementById("vLink"+i+"2").className = "";
    }
  }
	document.getElementById("vLink"+vNum+""+vNum).className = "active";
  document.getElementById("tab"+vNum).style.display = "inline-block";
	document.getElementById("links_tab"+vNum).style.display = "inline-block";
}

function switchTab_woning(vNum){
	for(i=0;i<4;i++){
    if(document.getElementById("woning_tab"+i)){
      document.getElementById("woning_tab"+i).style.display = "none";
      document.getElementById("vLink"+i).className = "";
			document.getElementById("vLink"+i).className = "";
			document.getElementById("vLink"+i).className = "";
			if (document.getElementById("nextLink"+i)) { document.getElementById("nextLink"+i).style.display = "none"; }
    }
  }
	document.getElementById("vLink"+vNum).className = "active";
  document.getElementById("woning_tab"+vNum).style.display = "inline-block";
	if (document.getElementById("nextLink"+vNum)) { document.getElementById("nextLink"+vNum).style.display = "block"; }
}