var imageFiles_h_21 = new Array();
imageFiles_h_21['0'] = new Array ('_images/h_Home.gif', '_images/h_HomeMouseover.gif');
imageFiles_h_21['1'] = new Array ('_images/h_About_Us.gif', '_images/h_About_UsMouseover.gif');
imageFiles_h_21['2'] = new Array ('_images/h_Services.gif', '_images/h_ServicesMouseover.gif');
imageFiles_h_21['3'] = new Array ('_images/h_Past_Work.gif', '_images/h_Past_WorkMouseover.gif');
imageFiles_h_21['4'] = new Array ('_images/h_RFQ.gif', '_images/h_RFQMouseover.gif');
imageFiles_h_21['5'] = new Array ('_images/h_Contact_Us.gif', '_images/h_Contact_UsMouseover.gif');

function image_on_h_21 (position) {
   var doc = eval("document.imageh_21" + position);
   doc.src = imageFiles_h_21[position][1];
}

function image_off_h_21 (position) {
   var doc = eval("document.imageh_21" + position);
   doc.src = imageFiles_h_21[position][0];
}