function changecolor(id, color) { 
element = document.getElementById(id); 
event.cancelBubble = true; 
oldcolor = element.currentStyle.background; 
element.style.background = color; 
} 
function SwitchDisplay(id){
    document.getElementById(id).style.display="block";
  }
function Show(id1,id2,id3){
    document.getElementById(id1).style.display="block";
	document.getElementById(id2).style.display="none";
	document.getElementById(id3).style.display="block";
  }
function Hide(id1,id2,id3){
    document.getElementById(id1).style.display="none";
	document.getElementById(id2).style.display="block";
	document.getElementById(id3).style.display="none";
  }
function Switch(div) {
var obj=document.getElementById(div);
obj.style.display=(div==div) && !(obj.style.display=="block")? "block" : "none"; 
}