if (document.images) 
{
img1 = new Image();
img2 = new Image();
img3 = new Image();
img4 = new Image();
img5 = new Image();
img6 = new Image();
img1.src = "images/bocabento.jpg"
img2.src = "images/bocabento2.jpg"
img3.src = "images/bocabento3.jpg"
img4.src = "images/bocabento4.jpg"
img5.src = "images/bocabento5.jpg"
img6.src = "images/bocabento6.jpg"
}