/*
 * menuDropdown.js - implements an dropdown menu based on a HTML list
 * Author: Dave Lindquist (http://www.gazingus.org)
 */

var currentMenu = null;

if (!document.getElementById)
    document.getElementById = function() { return null; }

function initializeMenu(menuId, actuatorId) {
    var menu = document.getElementById(menuId);
    var actuator = document.getElementById(actuatorId);

    if (menu == null || actuator == null) return;

    //if (window.opera) return; // I'm too tired
    menu.style.left = findPosX(actuator) - 14 + "px";
    menu.style.top = findPosY(actuator) + 33 + "px";
    menu.style.visibility = "hidden";
        
/*	actuator.onmouseover = function() {
        if (currentMenu) {
            currentMenu.style.visibility = "hidden";
            this.showMenu();
        }

    }
*/
  
    actuator.onclick = function() {

        if (currentMenu == null) {
            this.showMenu();
        }
        else {
            currentMenu.style.visibility = "hidden";
            currentMenu = null;
            this.showMenu();
        }

        return true;
    }

    actuator.showMenu = function() {
        //menu.style.visibility = "visible";
        currentMenu = menu;
    }
}

function selectMenu(itemId, menuId, actuatorId) {

	var menuItem = document.getElementById(itemId);
    var actuator = document.getElementById(actuatorId);
    var menu = document.getElementById(menuId);
    
    if (menu == null || actuator == null) return;
    
	if(actuatorId=="aboutusActuator") {
		actuator.style.backgroundImage = "url(about_us_on.gif)";
	} else if(actuatorId=="ourservicesActuator") {
		actuator.style.backgroundImage = "url(our_services_on.gif)";
	} else if(actuatorId=="ourclientsActuator") {
		actuator.style.backgroundImage = "url(our_clients_on.gif)";
	} else if(actuatorId=="portfolioActuator") {
		actuator.style.backgroundImage = "url(portfolio_on.gif)";
	} else if(actuatorId=="newsroomActuator") {
		actuator.style.backgroundImage = "url(newsroom_on.gif)";
	} else if(actuatorId=="contactusActuator") {
		actuator.style.backgroundImage = "url(contactus_on.gif)";
	}

    menu.style.visibility = "visible";
	if(menuItem == null) {
	} else {
		menuItem.style.color = "#E88700";
		menuItem.style.backgroundImage = "url(on.gif)";
	}
    currentMenu = menu;

}

function findPosX(obj)
{
	var curleft = 0;
	if (obj.offsetParent)
	{
		while (obj.offsetParent)
		{
			curleft += obj.offsetLeft
			obj = obj.offsetParent;
		}
	}
	else if (obj.x)
		curleft += obj.x;
	return curleft;
}

function findPosY(obj)
{
	var curtop = 0;
	if (obj.offsetParent)
	{
		while (obj.offsetParent)
		{
			curtop += obj.offsetTop
			obj = obj.offsetParent;
		}
	}
	else if (obj.y)
		curtop += obj.y;
	return curtop;
}