//Monitor all clicks
Event.observe(document,"click",attachEvents);

//If a "clicked element" has a specified class pop up the help and attach close events
function attachEvents(event){
	var element = Event.element(event);
	if(element.hasClassName('interface_help_link_image')){
		Event.stop(event);
		var text=getHelpText(element);
		var xy=Position.cumulativeOffset(element);
		$("interface_help_pop_up").style.display="block";
		$("interface_help_pop_up").style.right=(xy[0]+240)+"px"
		$("interface_help_pop_up").style.top=(xy[1]+20)+"px";
		$("interface_help_pop_up_content").innerHTML=text;
		$("interface_help_pop_up_close_link").observe("click",closeHelp)
	}
}

//Close pop up hlep
function closeHelp(event){
	$("interface_help_pop_up").style.display="none";
}

//Get help text from img title 
function getHelpText(element){
	var text=element.title;
	return text;
}