var imageFiles_1iy_23 = new Array();
imageFiles_1iy_23['0'] = new Array ('_images/1iy_1955_57.gif', '_images/1iy_1955_57Mouseover.gif');
imageFiles_1iy_23['1'] = new Array ('_images/1iy_1958_60.gif', '_images/1iy_1958_60Mouseover.gif');
imageFiles_1iy_23['2'] = new Array ('_images/1iy_1961_63.gif', '_images/1iy_1961_63Mouseover.gif');
imageFiles_1iy_23['3'] = new Array ('_images/1iy_1964_66.gif', '_images/1iy_1964_66Mouseover.gif');
imageFiles_1iy_23['4'] = new Array ('_images/1iy_1967_71.gif', '_images/1iy_1967_71Mouseover.gif');

function image_on_1iy_23 (position) {
   var doc = eval("document.image1iy_23" + position);
   doc.src = imageFiles_1iy_23[position][1];
}

function image_off_1iy_23 (position) {
   var doc = eval("document.image1iy_23" + position);
   doc.src = imageFiles_1iy_23[position][0];
}