var imageFiles_f_21 = new Array();
imageFiles_f_21['0'] = new Array ('_images/f_HOME.gif', '_images/f_HOMEMouseover.gif');
imageFiles_f_21['1'] = new Array ('_images/f_BENEFITS.gif', '_images/f_BENEFITSMouseover.gif');
imageFiles_f_21['2'] = new Array ('_images/f_APPLICATIONS.gif', '_images/f_APPLICATIONSMouseover.gif');
imageFiles_f_21['3'] = new Array ('_images/f_SERVICES.gif', '_images/f_SERVICESMouseover.gif');
imageFiles_f_21['4'] = new Array ('_images/f_CLEANING_COMPARISONS.gif', '_images/f_CLEANING_COMPARISONSMouseover.gif');
imageFiles_f_21['5'] = new Array ('_images/f_FAQ_S.gif', '_images/f_FAQ_SMouseover.gif');
imageFiles_f_21['6'] = new Array ('_images/f_CONTACT.gif', '_images/f_CONTACTMouseover.gif');
imageFiles_f_21['7'] = new Array ('_images/f_BEFORE_AND_AFTER.gif', '_images/f_BEFORE_AND_AFTERMouseover.gif');
imageFiles_f_21['8'] = new Array ('_images/f_EQUIPMENT_RENTAL.gif', '_images/f_EQUIPMENT_RENTALMouseover.gif');
imageFiles_f_21['9'] = new Array ('_images/f_ENVIRONMENTAL_FACTS.gif', '_images/f_ENVIRONMENTAL_FACTSMouseover.gif');

function image_on_f_21 (position) {
   var doc = eval("document.imagef_21" + position);
   doc.src = imageFiles_f_21[position][1];
}

function image_off_f_21 (position) {
   var doc = eval("document.imagef_21" + position);
   doc.src = imageFiles_f_21[position][0];
}