function ShowSubnav(the_div,bg_div)
{
    if (window.document.all)
    {
	window.document.all(bg_div).style.visibility="visible";
	window.document.all(the_div).style.visibility="visible";
		
    } else if (document.layers) {
    	window.document(bg_div).visibility="visible";
    	window.document(the_div).visibility="visible";
    	
    } else {
    	window.document.getElementById(bg_div).style.visibility="visible";
    	window.document.getElementById(the_div).style.visibility="visible";
    	
    }
}

//Hide the  layer
function HideSubnav(the_div,bg_div)
{
    if (window.document.all)
    {
    	window.document.all(bg_div).style.visibility = "hidden";
	window.document.all(the_div).style.visibility = "hidden";
	
    } else if (document.layers) {
    	window.document(bg_div).visibility = "hidden";
        window.document(the_div).visibility = "hidden";
        
    }else {
    	window.document.getElementById(bg_div).style.visibility="hidden";
    	window.document.getElementById(the_div).style.visibility="hidden";
    }
}


function ShowSubnav1(the_div)
{
    if (window.document.all)
    {
	window.document.all(the_div).style.visibility="visible";
		
    } else if (document.layers) {
    	window.document(the_div).visibility="visible";
    	
    } else {
    	window.document.getElementById(the_div).style.visibility="visible";
    	
    }
}

//Hide the  layer
function HideSubnav1(the_div)
{
    if (window.document.all)
    {
	window.document.all(the_div).style.visibility = "hidden";
	
    } else if (document.layers) {
        window.document(the_div).visibility = "hidden";
        
    }else {
    	window.document.getElementById(the_div).style.visibility="hidden";
    }
}

function changeBgImg(layername,bgimage) { 
   if (document.all) {
   document.all(layername).style.background='url(images/'+bgimage+')'; 
   
   } else if (document.layers) {
   document.layers[layername].background.src='images/'+bgimage+''; 
   
   }
} 


function clearFooterMenus() {
  	HideSubnav1("home_bg");
  	HideSubnav1("contacts_bg");
    	HideSubnav1("company_bg");
  	HideSubnav1("news_bg");
  	HideSubnav1("careers_bg");
}