var imageFiles_12_22 = new Array();
imageFiles_12_22['0'] = new Array ('_images/12_Home.gif', '_images/12_HomeMouseover.gif');
imageFiles_12_22['1'] = new Array ('_images/12_About_Us.gif', '_images/12_About_UsMouseover.gif');
imageFiles_12_22['2'] = new Array ('_images/12_Clinical_Services.gif', '_images/12_Clinical_ServicesMouseover.gif');
imageFiles_12_22['3'] = new Array ('_images/12_Patient_Information.gif', '_images/12_Patient_InformationMouseover.gif');
imageFiles_12_22['4'] = new Array ('_images/12_Our_Staff.gif', '_images/12_Our_StaffMouseover.gif');
imageFiles_12_22['5'] = new Array ('_images/12_Survey_Form_.gif', '_images/12_Survey_Form_Mouseover.gif');
imageFiles_12_22['6'] = new Array ('_images/12_Mailing_List.gif', '_images/12_Mailing_ListMouseover.gif');
imageFiles_12_22['7'] = new Array ('_images/12_Contact_Us.gif', '_images/12_Contact_UsMouseover.gif');
imageFiles_12_22['8'] = new Array ('_images/12_Newsletter.gif', '_images/12_NewsletterMouseover.gif');
imageFiles_12_22['9'] = new Array ('_images/12_Alert.gif', '_images/12_AlertMouseover.gif');

function image_on_12_22 (position) {
   var doc = eval("document.image12_22" + position);
   doc.src = imageFiles_12_22[position][1];
}

function image_off_12_22 (position) {
   var doc = eval("document.image12_22" + position);
   doc.src = imageFiles_12_22[position][0];
}