var imageFiles_1t_1 = new Array();
imageFiles_1t_1['0'] = new Array ('_images/1t_SUPPLIES.gif', '_images/1t_SUPPLIESMouseover.gif');
imageFiles_1t_1['1'] = new Array ('_images/1t_EBOOKS.gif', '_images/1t_EBOOKSMouseover.gif');
imageFiles_1t_1['2'] = new Array ('_images/1t_BEST_SELLERS.gif', '_images/1t_BEST_SELLERSMouseover.gif');
imageFiles_1t_1['3'] = new Array ('_images/1t_NURSING___MORE.gif', '_images/1t_NURSING___MOREMouseover.gif');
imageFiles_1t_1['4'] = new Array ('_images/1t_REFERENCES.gif', '_images/1t_REFERENCESMouseover.gif');
imageFiles_1t_1['5'] = new Array ('_images/1t_TEXTBOOKS.gif', '_images/1t_TEXTBOOKSMouseover.gif');
imageFiles_1t_1['6'] = new Array ('_images/1t_BUYBACK.gif', '_images/1t_BUYBACKMouseover.gif');

function image_on_1t_1 (position) {
   var doc = eval("document.image1t_1" + position);
   doc.src = imageFiles_1t_1[position][1];
}

function image_off_1t_1 (position) {
   var doc = eval("document.image1t_1" + position);
   doc.src = imageFiles_1t_1[position][0];
}