var imageFiles_17_21 = new Array();
imageFiles_17_21['0'] = new Array ('_images/17_Home.gif', '_images/17_HomeMouseover.gif');
imageFiles_17_21['1'] = new Array ('_images/17_About_Glenn.gif', '_images/17_About_GlennMouseover.gif');
imageFiles_17_21['2'] = new Array ('_images/17_Commonly_Treated_Conditions.gif', '_images/17_Commonly_Treated_ConditionsMouseover.gif');
imageFiles_17_21['3'] = new Array ('_images/17_Patient_Info___Resources.gif', '_images/17_Patient_Info___ResourcesMouseover.gif');
imageFiles_17_21['4'] = new Array ('_images/17_Testimonials.gif', '_images/17_TestimonialsMouseover.gif');
imageFiles_17_21['5'] = new Array ('_images/17_Contact_Us.gif', '_images/17_Contact_UsMouseover.gif');
imageFiles_17_21['6'] = new Array ('_images/17_Map___Directions.gif', '_images/17_Map___DirectionsMouseover.gif');

function image_on_17_21 (position) {
   var doc = eval("document.image17_21" + position);
   doc.src = imageFiles_17_21[position][1];
}

function image_off_17_21 (position) {
   var doc = eval("document.image17_21" + position);
   doc.src = imageFiles_17_21[position][0];
}