function showimg1(){
document.area.src = "images/ad/1.jpg";
}

function showimg2(){
document.area.src = "images/ad/2.jpg";
}

function showimg3(){
document.area.src = "images/ad/3.jpg";
}

function showimg4(){
document.area.src = "images/ad/4.jpg";
}

function showimg5(){
document.area.src = "images/ad/5.jpg";
}

function showimg6(){
document.area.src = "images/ad/6.jpg";
}

function showimg7(){
document.area.src = "images/ad/7.jpg";
}

function showimg8(){
document.area.src = "images/ad/8.jpg";
}

function showimg9(){
document.area.src = "images/ad/9.jpg";
}

function showimg10(){
document.area.src = "images/ad/10.jpg";
}

function showimg11(){
document.area.src = "images/ad/11.jpg";
}

function showimg12(){
document.area.src = "images/ad/12.jpg";
}

function showimg13(){
document.area.src = "images/ad/13.jpg";
}

function showimg14(){
document.area.src = "images/ad/14.jpg";
}

function showimg15(){
document.area.src = "images/ad/15.jpg";
}

function showimg16(){
document.area.src = "images/ad/16.jpg";
}

function showimg17(){
document.area.src = "images/ad/17.jpg";
}

function showimg18(){
document.area.src = "images/ad/18.jpg";
}
// JavaScript Document