var imageFiles_53_19 = new Array();
imageFiles_53_19['0'] = new Array ('_images/53_All_Heating_Parts.gif', '_images/53_All_Heating_PartsMouseover.gif');

function image_on_53_19 (position) {
   var doc = eval("document.image53_19" + position);
   doc.src = imageFiles_53_19[position][1];
}

function image_off_53_19 (position) {
   var doc = eval("document.image53_19" + position);
   doc.src = imageFiles_53_19[position][0];
}