var imageFiles_dx_1 = new Array();
imageFiles_dx_1['0'] = new Array ('_images/dx_CONTACT_US.gif', '_images/dx_CONTACT_USMouseover.gif');

function image_on_dx_1 (position) {
   var doc = eval("document.imagedx_1" + position);
   doc.src = imageFiles_dx_1[position][1];
}

function image_off_dx_1 (position) {
   var doc = eval("document.imagedx_1" + position);
   doc.src = imageFiles_dx_1[position][0];
}