var imageFiles_tc_1 = new Array();
imageFiles_tc_1['0'] = new Array ('_images/tc_CONTACT_US.gif', '_images/tc_CONTACT_USMouseover.gif');

function image_on_tc_1 (position) {
   var doc = eval("document.imagetc_1" + position);
   doc.src = imageFiles_tc_1[position][1];
}

function image_off_tc_1 (position) {
   var doc = eval("document.imagetc_1" + position);
   doc.src = imageFiles_tc_1[position][0];
}