var imageFiles_91_15 = new Array();
imageFiles_91_15['0'] = new Array ('_images/91_Israel.gif', '_images/91_IsraelMouseover.gif');

function image_on_91_15 (position) {
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   doc.src = imageFiles_91_15[position][1];
}

function image_off_91_15 (position) {
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   doc.src = imageFiles_91_15[position][0];
}