// JavaScript Document
function toggleLayer( whichLayer ){  var elem, vis;  if( document.getElementById ) // this is the way the standards work
    elem = document.getElementById( whichLayer );  
	else if( document.all ) // this is the way old msie versions work      
	elem = document.all[whichLayer];  else if( document.layers ) // this is the way nn4 works    
	elem = document.layers[whichLayer];  vis = elem.style;  // if the style.display value is blank we try to figure it out here
	  if(vis.display==''&&elem.offsetWidth!=undefined&&elem.offsetHeight!=undefined)    
	  vis.display = (elem.offsetWidth!=0&&elem.offsetHeight!=0)?'block':'none';  
	  vis.display = (vis.display==''||vis.display=='block')?'none':'block';}

function HideContent(d) {
document.getElementById(d).style.display = "none";
}
function ShowContent(d) {
document.getElementById(d).style.display = "block";
}
function ReverseDisplay(d) {
if(document.getElementById(d).style.display == "none") { document.getElementById(d).style.display = "block"; }
else { document.getElementById(d).style.display = "none"; }
}