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        index_on = new Image();
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        about_on = new Image();
        about_on.src = "./pic/bottom05d.gif"
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        close_on = new Image();
        close_on.src = "./pic/closewind.gif"
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        close_off.src = "./pic/closewin.gif"
 

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function unselect(imgName) {
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function erase() {
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// -->