var imageFiles_i_13 = new Array();
imageFiles_i_13['0'] = new Array ('_images/i_Contact_Us_.gif', '_images/i_Contact_Us_Mouseover.gif');

function image_on_i_13 (position) {
   var doc = eval("document.imagei_13" + position);
   doc.src = imageFiles_i_13[position][1];
}

function image_off_i_13 (position) {
   var doc = eval("document.imagei_13" + position);
   doc.src = imageFiles_i_13[position][0];
}