// JavaScript Document

function getElement( div )
{

  var element;
  
  // this is the way it should work
  if( document.getElementById )	element = document.getElementById( div );
  	
  // old ie versions work
  else if( document.all ) 		element = document.all[ div ];
    	
  // nn4 works
  else if( document.layers )	element = document.layers[ div ];
  
  return element;
  
}

function toggle( div )
{
  	
	//gets the appropriate layer
	var element = getElement( div );
	
	//toggles visible/hidden
	if ( element.style.visibility == 'hidden' )
	{
		
		show( div );
		
	}else{
		
		hide( div );
		
	}
	
	
}
function show( div ){
	
	var element = getElement( div );
	element.style.display 		= 'block';
	element.style.visibility	= 'visible';
	
}
function hide( div ){
	
	var element = getElement( div );
	element.style.display		= 'none';
	element.style.visibility 	= 'hidden';
	
}