var imageFiles_4s_4 = new Array();
imageFiles_4s_4['0'] = new Array ('_images/4s_Home.gif', '_images/4s_HomeMouseover.gif');
imageFiles_4s_4['1'] = new Array ('_images/4s_About_Us.gif', '_images/4s_About_UsMouseover.gif');
imageFiles_4s_4['2'] = new Array ('_images/4s_Services.gif', '_images/4s_ServicesMouseover.gif');
imageFiles_4s_4['3'] = new Array ('_images/4s_Constant_Pressure_Pumps.gif', '_images/4s_Constant_Pressure_PumpsMouseover.gif');
imageFiles_4s_4['4'] = new Array ('_images/4s_Projects.gif', '_images/4s_ProjectsMouseover.gif');
imageFiles_4s_4['5'] = new Array ('_images/4s_FAQ.gif', '_images/4s_FAQMouseover.gif');
imageFiles_4s_4['6'] = new Array ('_images/4s_Contact_Us.gif', '_images/4s_Contact_UsMouseover.gif');

function image_on_4s_4 (position) {
   var doc = eval("document.image4s_4" + position);
   doc.src = imageFiles_4s_4[position][1];
}

function image_off_4s_4 (position) {
   var doc = eval("document.image4s_4" + position);
   doc.src = imageFiles_4s_4[position][0];
}