// Copyright(C) 2010 warren Software
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"; }
}
function HideAllShowOne(d) {
// Between the quotation marks, list the id values of each div.

var IDvaluesOfEachDiv = "caption_1 caption_2 caption_3 caption_4";

//-------------------------------------------------------------
IDvaluesOfEachDiv = IDvaluesOfEachDiv.replace(/[,\s"']/g," ");
IDvaluesOfEachDiv = IDvaluesOfEachDiv.replace(/^\s*/,"");
IDvaluesOfEachDiv = IDvaluesOfEachDiv.replace(/\s*$/,"");
IDvaluesOfEachDiv = IDvaluesOfEachDiv.replace(/  +/g," ");
var IDlist = IDvaluesOfEachDiv.split(" ");
for(var i=0; i<IDlist.length; i++) { HideContent(IDlist[i]); }
ShowContent(d);
}

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';
}