function HideShowDiv(divid)
 {
      var divlayer = document.getElementById(divid);
      if(divlayer.style.display == "block")
      {
      divlayer.style.display = "none";
      }
      else
      divlayer.style.display = "block"
 }
  function ChangeBg(tdid)
  {
  var td = document.getElementById(tdid);
  td.style.background = "#3399ff";
  td.style.color= "white";
  }
  function ReturnBg(tdid)
  {
  var td = document.getElementById(tdid);
  td.style.background = "white";
  td.style.color = "black";
  }
function HideDiv(divid)
 {
    var divlayer = document.getElementById(divid);
    divlayer.style.display = "none";
 }
 function HideDivs(divid1,divid2,divid3,divid4,divid5)
 {
	var divlayer1 = document.getElementById(divid1);
	var divlayer2 = document.getElementById(divid2);
	var divlayer3 = document.getElementById(divid3);  
	var divlayer4 = document.getElementById(divid4);  
	var divlayer5 = document.getElementById(divid5);  
	if (divlayer1){divlayer1.style.display = "none";}
    if (divlayer2){divlayer2.style.display = "none";}
	if (divlayer3){divlayer3.style.display = "none";}	  
	if (divlayer4){divlayer4.style.display = "none";}	  
	if (divlayer5){divlayer5.style.display = "none";}	  
 }
 
 
 function ShowOneDiv(divid)
 {
    var divlayer = document.getElementById(divid);
	if (divlayer.style.display =="block")
	{
	divlayer.style.display = "none";
	}else
	{
    divlayer.style.display = "block";
	}
 }
 
 
 function ShowDiv(divid1,divid2,divid3)
 {
	var divlayer1 = document.getElementById(divid1);
	var divlayer2 = document.getElementById(divid2);
	var divlayer3 = document.getElementById(divid3);  
    divlayer1.style.display = "block";
	if (divlayer2){divlayer2.style.display = "none";}
	if (divlayer3){divlayer3.style.display = "none";}	  
 }