// JavaScript Document


var ddmenuitem = 0;

var speed = 300;
var trans = 'cubic:out';

var margin_start = 8;
var margin_end = 43;
var button_color = '#cccccc';


// open hidden layer
function mopen(i)
{		
	var tempmenu = openmenu; // temporary variable set to open menu at the time of the click

	// close the open menu as long as it's not the current menu for the page
	if(tempmenu != currentmenu)
	{
		mclose(tempmenu);
		openmenu = currentmenu;
	}
	
	// open the clicked menu as long as it wasn't already open and it's not the current page menu
	if(i != tempmenu && i != currentmenu)
	{	
		ddmenuitem = $('nav_'+i);
		ddbutton = $('nav_button_'+i);
	
		ddmenuitem.set('tween', {duration: speed, transition: trans});
		ddmenuitem.tween('marginTop', margin_end);
		ddbutton.style.backgroundColor = button_color;
		
		openmenu = i;	
	}
}
// close menu
function mclose(i)
{
	ddmenuitem = $('nav_'+i);
	ddbutton = $('nav_button_'+i);

	ddmenuitem.set('tween', {duration: speed, transition: trans});
	ddmenuitem.tween('marginTop', margin_start);
	ddbutton.style.backgroundColor = "inherit";
}