var aryImages = new Array();
aryImages[0] = "/images/main_home_ro.jpg";
aryImages[1] = "/images/main_ourphysicians_ro.jpg";
aryImages[2] = "/images/main_locations_ro.jpg";
aryImages[3] = "/images/main_services_ro.jpg";
aryImages[4] = "/images/main_newheartimaging_ro.jpg";
aryImages[5] = "/images/main_forpatients_ro.jpg";
aryImages[6] = "/images/main_forphysicians_ro.jpg";
aryImages[7] = "/images/main_aboutus_ro.jpg";

for (i=0; i < aryImages.length; i++) 
{
    var preload = new Image();
    preload.src = aryImages[i];
}