// SHOW / HIDE CONTENT FUNCTION
var intCurrentOpenID = 'a1';

function fn_OpenDiv(thisID)
{
 //HIDE CURRENTLY OPEN DIV
 document.getElementById(intCurrentOpenID).style.display = 'none';
 
 //OPEN DIV TO SHOW
 document.getElementById(thisID).style.display = 'block';
 
 //SET ID TO VARIABLE
 intCurrentOpenID = thisID;
}
function HideContent(d) {document.getElementById(d).style.display = "none";}
function ShowContent(d) {document.getElementById(d).style.display = "";}
function ReverseContentDisplay(d) 
{if(document.getElementById(d).style.display == "none") { document.getElementById(d).style.display = ""; 
}else { document.getElementById(d).style.display = "none"; }}