var imageFiles_4t9up_1 = new Array();
imageFiles_4t9up_1['0'] = new Array ('_images/4t9up_Home.gif', '_images/4t9up_HomeMouseover.gif');
imageFiles_4t9up_1['1'] = new Array ('_images/4t9up_About_Us.gif', '_images/4t9up_About_UsMouseover.gif');
imageFiles_4t9up_1['2'] = new Array ('_images/4t9up_Projects.gif', '_images/4t9up_ProjectsMouseover.gif');
imageFiles_4t9up_1['3'] = new Array ('_images/4t9up_Contact_Us.gif', '_images/4t9up_Contact_UsMouseover.gif');

function image_on_4t9up_1 (position) {
   var doc = eval("document.image4t9up_1" + position);
   doc.src = imageFiles_4t9up_1[position][1];
}

function image_off_4t9up_1 (position) {
   var doc = eval("document.image4t9up_1" + position);
   doc.src = imageFiles_4t9up_1[position][0];
}