function swapin()
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    function swapout()
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    function wapin()
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    document.imge.src="images/products.jpg";
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    function wapout()
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    document.imge.src="images/products1.jpg";
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    function sapin()
    {
    document.img.src="images/contactus.jpg";
    }
    function sapout()
    {
    document.img.src="images/contactus1.jpg";
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     function vapin()
    {
    document.img1.src="images/email.jpg";
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    function vapout()
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    document.img1.src="images/e-mail1.jpg";
    }