var imageFiles_4s_15 = new Array();
imageFiles_4s_15['0'] = new Array ('_images/4s_Home.gif', '_images/4s_HomeMouseover.gif');
imageFiles_4s_15['1'] = new Array ('_images/4s_About_Us.gif', '_images/4s_About_UsMouseover.gif');
imageFiles_4s_15['2'] = new Array ('_images/4s_Services.gif', '_images/4s_ServicesMouseover.gif');
imageFiles_4s_15['3'] = new Array ('_images/4s_Constant_Pressure_Pumps.gif', '_images/4s_Constant_Pressure_PumpsMouseover.gif');
imageFiles_4s_15['4'] = new Array ('_images/4s_Projects.gif', '_images/4s_ProjectsMouseover.gif');
imageFiles_4s_15['5'] = new Array ('_images/4s_FAQ.gif', '_images/4s_FAQMouseover.gif');
imageFiles_4s_15['6'] = new Array ('_images/4s_Contact_Us.gif', '_images/4s_Contact_UsMouseover.gif');

function image_on_4s_15 (position) {
   var doc = eval("document.image4s_15" + position);
   doc.src = imageFiles_4s_15[position][1];
}

function image_off_4s_15 (position) {
   var doc = eval("document.image4s_15" + position);
   doc.src = imageFiles_4s_15[position][0];
}