var timeout	= 200;
var closetimer	= 0;
var ddmenuitem	= 0;

// open hidden layer
function mopen(id,img_name,img_src)
{	

   	document[img_name].src = img_src;
  
 	// cancel close timer
	mcancelclosetime();

	/* close old layer */
	if(ddmenuitem) ddmenuitem.style.visibility = 'hidden';
  
 
 	// get new layer and show it
	ddmenuitem = document.getElementById(id);
	
 	ddmenuitem.style.visibility = 'visible';
	display_hover2();
}

// close showed layer
function mclose(img_name,img_src)
{
   	if(ddmenuitem) 
	{
		ddmenuitem.style.visibility = 'hidden';
		document[img_name].src = img_src;		
	}display_hover2();
}

// go close timer
function mclosetime(id,img_name,img_src)
{
  		document[img_name].src = img_src;
         closetimer = window.setTimeout('mclose(\''+img_name+'\',\''+img_src+'\')', 0);
}

 
 function change_img(id,img_name,img_src)
{
         
  		document[img_name].src = img_src;
		ddmenuitem.style.visibility = 'hidden';
         display_hover2();
 }

 
 // cancel close timer
function mcancelclosetime()
{
	
	if(closetimer)
	{
 		window.clearTimeout(closetimer);
 		closetimer = null;
		
	}display_hover2();
}

// close layer when click-out
document.onclick = mclose; 
function display_hover()
{
var tval=document.title;
if(tval=="Flight Information" || tval=="Arrivals" || tval=="Departures" || tval=="Flight Schedules" || tval=="Airline Contacts")
	 {
	document['flight'].src = "/bial/images/menu_images/flightinfo_hover.gif"; Custom.init();
	 }

	 else if(tval=="Airport Information" || tval=="Domestic Arrivals" || tval=="Domestic Departures" || tval=="International Arrivals" || tval=="International Departures" || tval=="Transit Passengers" || tval=="Lounges" || tval=="Security Information" || tval=="Airport Map" || tval=="Facilities" || tval=="Baggage Claim" || tval=="Lost and Found" || tval=="FAQs")
	  {
    document['air'].src = "/bial/images/menu_images/airportinfo_hover.gif"; Custom.init();
	  }
	  
	 else if(tval=="Transport" || tval=="Car Rentals" || tval=="Taxis" || tval=="Buses" || tval=="Trains" || tval=="Heli Services" || tval=="Driving to and from Airport" || tval=="Parking Options") 
	  {
   document['trans'].src = "/bial/images/menu_images/transport_hover.gif"; Custom.init();
	  }

else if(tval=="Shopping and FnB" || tval=="Stores" || tval=="Duty Free Shops" || tval=="Eateries")
	  {
    document['shop'].src = "/bial/images/menu_images/shopping_hover.gif"; Custom.init();
	  }

else if(tval=="Plan Your Trip" || tval=="Discover South India" || tval=="Travelogue" || tval=="Bookings" || tval=="Weather")
	  {
   document['plan'].src = "/bial/images/menu_images/plantrip_hover.gif"; Custom.init();
	  }
	  
else if(tval=="Our Business" || tval=="About BIAL" || tval=="Master Plan and Projects" || tval=="Advertising" || tval=="Airport Partners" || tval=="Airport City" || tval=="Airport Charges" || tval=="Media Center" || tval=="Careers" || tval=="Contact Us" || tval=="Feedback" || tval=="Tender")
	  {
    document['buiss'].src = "/bial/images/menu_images/ourbusiness_hover.gif"; Custom.init();
	  }
	  
}

function display_hover2()
{
var tval=document.title;
if(tval=="Flight Information" || tval=="Arrivals" || tval=="Departures" || tval=="Flight Schedules" || tval=="Airline Contacts")
	 {
	document['flight'].src = "/bial/images/menu_images/flightinfo_hover.gif";
	 }

	 else if(tval=="Airport Information" || tval=="Domestic Arrivals" || tval=="Domestic Departures" || tval=="International Arrivals" || tval=="International Departures" || tval=="Transit Passengers" || tval=="Lounges" || tval=="Security Information" || tval=="Airport Map" || tval=="Facilities" || tval=="Baggage Claim" || tval=="Lost and Found" || tval=="FAQs")
	  {
    document['air'].src = "/bial/images/menu_images/airportinfo_hover.gif";
	  }
	  
	 else if(tval=="Transport" || tval=="Car Rentals" || tval=="Taxis" || tval=="Buses" || tval=="Trains" || tval=="Heli Services" || tval=="Driving to and from Airport" || tval=="Parking Options") 
	  {
   document['trans'].src = "/bial/images/menu_images/transport_hover.gif";
	  }

else if(tval=="Shopping and FnB" || tval=="Stores" || tval=="Duty Free Shops" || tval=="Eateries")
	  {
    document['shop'].src = "/bial/images/menu_images/shopping_hover.gif";
	  }

else if(tval=="Plan Your Trip" || tval=="Discover South India" || tval=="Travelogue" || tval=="Bookings" || tval=="Weather")
	  {
   document['plan'].src = "/bial/images/menu_images/plantrip_hover.gif";
	  }
	  
else if(tval=="Our Business" || tval=="About BIAL" || tval=="Master Plan and Projects" || tval=="Advertising" || tval=="Airport Partners" || tval=="Airport City" || tval=="Airport Charges" || tval=="Media Center" || tval=="Careers" || tval=="Contact Us" || tval=="Feedback" || tval=="Tender")
	  {
    document['buiss'].src = "/bial/images/menu_images/ourbusiness_hover.gif";
	  }
}