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function navOn(cellid)
{
document.getElementById(cellid).style.backgroundImage='url(http://virtualmagic.freehostia.com/css-nav-button-on.jpg)'
}

function navOff(cellid)
{
document.getElementById(cellid).style.backgroundImage='url(http://virtualmagic.freehostia.com/css-nav-button-off.jpg)'
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function newModelWindow(url)
{

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