// JavaScript Document

/* -------------------------------------------------------------------------------- *\
  Function    : toggleDisplay()
  Description : toggle an HTML element's CSS display between none/block
  Usage       : onclick="return toggleDisplay('tag_id', 'show');" 					
  Arguments   :	id - the HTML element's ID
  						initialAction (optional) - 'show' or 'hide'
\* -------------------------------------------------------------------------------- */
function toggleDisplay(id){
	var element = document.getElementById(id);

	if(id=="null"){  
			return false;
	}
	
	if(element.style.display=="none"){
		element.style.display="block"; 
	}
	
	else if(element.style.display=="block"){
		element.style.display="none";
	}
	
	//default action is to display
	else{
		element.style.display="block";
	}
	
	return false;
}