// <![CDATA[
	function setVisible(obj, bool){

// see if it's a document id, if it's not, then it must be an obj reference
	if(typeof obj == "string")
		obj = document.getElementById(obj);

// if user chose false, then lets see if the obj needs to be hidden,
//and if it does, then hide it.
	
	if(bool == false){
		if(obj.style.visibility != 'hidden');
			obj.style.visibility = 'hidden';
		}

// the user chose true, or omitted the second parameter.
//see if the object is visible. If it isn't, the show it.

	else { 
		if(obj.style.visibility != 'visible');
		obj.style.visibility = 'visible';
	}
}
// ]]>