var imageFiles_iy_7 = new Array();
imageFiles_iy_7['0'] = new Array ('_images/iy_North_West_Team_Roper.gif', '_images/iy_North_West_Team_RoperMouseover.gif');

function image_on_iy_7 (position) {
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   doc.src = imageFiles_iy_7[position][1];
}

function image_off_iy_7 (position) {
   var doc = eval("document.imageiy_7" + position);
   doc.src = imageFiles_iy_7[position][0];
}