var oldtabdiv = "";
var oldtab = "";

function tabon(whatdiv,whattab){
	if(oldtabdiv == ""){
	oldtabdiv = whatdiv;
	oldtab = whattab;
	return oldtabdiv;
	return oldtab;
	}
}

function show(whatdiv,whattab){
	if(oldtabdiv != ""){
	document.getElementById(oldtabdiv).style.display='none';
	document.getElementById(oldtab).className='';
	}
	document.getElementById(whatdiv).style.display='block';
	document.getElementById(whattab).className='active';
	oldtabdiv = whatdiv;
	oldtab = whattab;
	return oldtabdiv;
	return oldtab;
	}

function makeItDark(lighboxId,darkLayerId){
    var obj = document.getElementById(lighboxId);
    var old = obj.innerHTML;
    obj.innerHTML = "<div id='light' class='white_content'>" + old + "</div>";
    var dark = document.getElementById(darkLayerId);
    if(dark.style.display == 'block')
    {
        dark.style.display = 'none';
    }
    else if (dark.style.display == 'none')
    {
        dark.style.display = 'block';
    }
}

function show_1(id){
    var obj = document.getElementById(id);
    if(obj.style.display == 'block')
    {
        obj.style.display = 'none';
    }
    else if (obj.style.display == 'none')
    {
        obj.style.display = 'block';
    }
    return id;
}
        
function show_2(id){
    
    var obj = document.getElementById(id);
    var old = obj.innerHTML.toString();
    if(old.indexOf("white_content")== -1){ 
        obj.innerHTML = "<div class='white_content'>" + old + "</div>";
    }else{
        obj.innerHTML = obj.innerHTML.substr(27,obj.innerHTML.length-6);
    }
    show_1('black_overlay');
}