if(document.images) {
pics = new Array(); 
pics[1] = new Image();
pics[1].src = "wp-content/themes/exoticstyles/images/bt_home1.png"; 
pics[2] = new Image();
pics[2].src = "wp-content/themes/exoticstyles/images/bt_home2.png"; 
pics[3] = new Image();
pics[3].src = "wp-content/themes/exoticstyles/images/bt_aboutus1.png"; 
pics[4] = new Image();
pics[4].src = "wp-content/themes/exoticstyles/images/bt_aboutus2.png"; 
pics[5] = new Image();
pics[5].src = "wp-content/themes/exoticstyles/images/bt_products1.png"; 
pics[6] = new Image();
pics[6].src = "wp-content/themes/exoticstyles/images/bt_products2.png"; 
pics[7] = new Image();
pics[7].src = "wp-content/themes/exoticstyles/images/bt_ourcrew1.png"; 
pics[8] = new Image();
pics[8].src = "wp-content/themes/exoticstyles/images/bt_ourcrew2.png"; 
pics[9] = new Image();
pics[9].src = "wp-content/themes/exoticstyles/images/bt_news1.png"; 
pics[10] = new Image();
pics[10].src = "wp-content/themes/exoticstyles/images/bt_news2.png"; 
pics[11] = new Image();
pics[11].src = "wp-content/themes/exoticstyles/images/bt_contactus1.png"; 
pics[12] = new Image();
pics[12].src = "wp-content/themes/exoticstyles/images/bt_contactus2.png"; 
}

function changer(from,to) {
if(document.images) {
document.images[from].src = pics[to].src;
}
}