function preloadImages()
{
	var d=document; if(d.images){ if(!d.p) d.p=new Array();
	var i,j=d.p.length,a=preloadImages.arguments; for(i=0; i<a.length; i++)
	if (a[i].indexOf("#")!=0){ d.p[j]=new Image; d.p[j++].src=a[i];}}
}

function preloadAMZ()
{
	preloadImages(
		'medias/images/bt-accueil-over.jpg',
		'medias/images/bt-contact-over.jpg',
		'medias/images/bt-partenaires-over.jpg',
		'medias/images/bt-poignees-over.jpg',
		'medias/images/bt-portes-over.jpg',
		'medias/images/bt-prescripteurs-over.jpg',
		'medias/images/bt-serrures-over.jpg',
		'medias/images/bt-systemes-over.jpg'
	);

}
	
function popup( url, height, width )
{
		
	var winl = (screen.width - width ) / 2;
	var wint = (screen.height - height ) / 2;
	
	window.open( url, 'POPUP', "top="+wint+", left="+winl+", height="+ height +", width="+width+", menubar=no, resizable=no, scroolbars=no, status=no, toolbar=no" );	
}

function hideMenus()
{
	var i		= 0 ;
	var last        = 5 ;
	var name	= 'menu-' ;

	for( i = 1 ; i <= last ; i ++ )
	{

		var cur = document.getElementById( name + i ) ;

		if( cur != null )
		{
			cur.style.display = 'none';
		}
	}
}

function showMenu( menuName )
{
	hideMenus();
	var cur = document.getElementById( menuName ) ;
	if( cur != null )
	{
		cur.style.display = 'block';
	}
}