MyImages=new Array();
    MyImages[0]='imgs/latestw4.jpg';
    MyImages[1]='imgs/latestw5.jpg';
    MyImages[2]='imgs/latestw6.jpg';
    MyImages[3]='imgs/latestw3.jpg';
    MyImages[4]='imgs/latestw2.jpg';
	MyImages[5]='imgs/latestw.jpg';

    function newImage()
    {
        document.getElementById("mainImage").setAttribute("src", MyImages[Math.round(Math.random()*3)])
    }