var imageFiles_30p_1 = new Array();
imageFiles_30p_1['0'] = new Array ('_images/30p_E_Mail_Us.gif', '_images/30p_E_Mail_UsMouseover.gif');

function image_on_30p_1 (position) {
   var doc = eval("document.image30p_1" + position);
   doc.src = imageFiles_30p_1[position][1];
}

function image_off_30p_1 (position) {
   var doc = eval("document.image30p_1" + position);
   doc.src = imageFiles_30p_1[position][0];
}