//code @James Drever, The Telematics Centre, University of Birmingham

if (document.layers) 
{
	visible = 'show';
	hidden = 'hide';
} 
else
{
	visible = 'visible';
	hidden = 'hidden';
}

var isNav = (navigator.appName.indexOf("Netscape") != -1);
var isIE = (navigator.appName.indexOf("Microsoft") != -1);

function initialiseMenus()
{
	if (isNav)
	{
		if (document.captureEvents) 
		{
			document.captureEvents(Event.MOUSEMOVE|Event.MOUSEUP);
		}
    document.onmouseup = this.closeAllMenus;
	}

	return;
}


function closeMenu(menu)
{
	if (document.layers) 
	{
		daMenu = document.layers[menu];

  	} 
	else if (document.all) 
	{
		daMenu = document.all(menu).style;
  	}
  	else
  	{
  		daMenu = document.getElementById(menu).style;
  	}

	daMenu.visibility = hidden;
}


function closeAllMenus()
{
 	closeMenu("SubMenuAboutUs");
 	closeMenu("SubMenuVacancies");
 	closeMenu("SubMenuClientServices");
 	closeMenu("SubMenuCandidateServices");
 	closeMenu("SubMenuContactUs");

}


function barTog(menu) 
{

 	closeMenu("SubMenuAboutUs");
 	closeMenu("SubMenuVacancies");
 	closeMenu("SubMenuClientServices");
 	closeMenu("SubMenuCandidateServices");
 	closeMenu("SubMenuContactUs");


	if (document.layers) 
	{
		daMenu = document.layers[menu];
  	} 
	else if (document.all) 
	{
		daMenu = document.all(menu).style;
  	}
  	else
  	{
  		daMenu = document.getElementById(menu).style;
  	}

  	if (daMenu.visibility == visible) 
	{
		daMenu.visibility = hidden;
	} 
	else
	{
		daMenu.visibility = visible;
	}
}