var imageFiles_y_25 = new Array();
imageFiles_y_25['0'] = new Array ('_images/y_Home.gif', '_images/y_HomeMouseover.gif');
imageFiles_y_25['1'] = new Array ('_images/y_Text_to_Speech.gif', '_images/y_Text_to_SpeechMouseover.gif');
imageFiles_y_25['2'] = new Array ('_images/y_Assistive_Technology.gif', '_images/y_Assistive_TechnologyMouseover.gif');
imageFiles_y_25['3'] = new Array ('_images/y_Contact_Us.gif', '_images/y_Contact_UsMouseover.gif');
imageFiles_y_25['4'] = new Array ('_images/y_Feedback.gif', '_images/y_FeedbackMouseover.gif');

function image_on_y_25 (position) {
   var doc = eval("document.imagey_25" + position);
   doc.src = imageFiles_y_25[position][1];
}

function image_off_y_25 (position) {
   var doc = eval("document.imagey_25" + position);
   doc.src = imageFiles_y_25[position][0];
}