var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		over_staff01 = newImage(/*URL*/'images/ss_01_on.jpg');
		down_staff01 = newImage(/*URL*/'images/ss_01.jpg');
		over_staff02 = newImage(/*URL*/'images/ss_02_on.jpg');
		down_staff02 = newImage(/*URL*/'images/ss_02.jpg');
		over_staff03 = newImage(/*URL*/'images/ss_03_on.jpg');
		down_staff03 = newImage(/*URL*/'images/ss_03.jpg');
		over_staff04 = newImage(/*URL*/'images/ss_04_on.jpg');
		down_staff04 = newImage(/*URL*/'images/ss_04.jpg');
		over_staff05 = newImage(/*URL*/'images/ss_05_on.jpg');
		down_staff05 = newImage(/*URL*/'images/ss_05.jpg');
		over_staff06 = newImage(/*URL*/'images/ss_06_on.jpg');
		down_staff06 = newImage(/*URL*/'images/ss_06.jpg');
		over_staff07 = newImage(/*URL*/'images/ss_07_on.jpg');
		down_staff07 = newImage(/*URL*/'images/ss_07.jpg');

		preloadFlag = true;
	}
}