img1=new Image()
img1.src="http://www.bestluxurytravels.com/image/menu_pic1_hover.jpg"; 
img2=new Image()
img2.src="http://www.bestluxurytravels.com/image/menu_pic2_hover.jpg";
img3=new Image() 
img3.src="http://www.bestluxurytravels.com/image/menu_pic3_hover.jpg";
img4=new Image() 
img4.src="http://www.bestluxurytravels.com/image/menu_pic4_hover.jpg";
img5=new Image() 
img5.src="http://www.bestluxurytravels.com/image/menu_pic5_hover.jpg";
img6=new Image() 
img6.src="http://www.bestluxurytravels.com/image/menu_pic6_hover.jpg"; 


function menu_onmouseover(id,slno)
{
    document.getElementById(id).setAttribute('src','http://www.bestluxurytravels.com/image/menu_pic'+ slno +'_hover.jpg');
}
function menu_onmouseout(id,slno)
{
    document.getElementById(id).setAttribute('src','http://www.bestluxurytravels.com/image/menu_pic'+ slno +'.jpg');
}