function imgpreload(){
	document.preload = new Array();
	for(var i = 0; i < imgpreload.arguments.length; i++){
		document.preload[i] = new Image();
		document.preload[i].src = "files/" + imgpreload.arguments[i];
	}
}

imgpreload("hg_mainnavi_bt_01.gif","hg_mainnavi_bt_02.gif","hg_mainnavi_bt_03.gif","hg_mainnavi_bt_04.gif","hg_mainnavi_bt_05.gif","hg_mainnavi_bt_06.gif","hg_mainnavi_bt_07.gif","hg_mainnavi_bt_08.gif","hg_mainnavi_bt_09.gif","hg_mainnavi_bt_10.gif","hg_mainnavi_bt_11.gif");
imgpreload("hg_mainnavi_bt_01_active.gif","hg_mainnavi_bt_02_active.gif","hg_mainnavi_bt_03_active.gif","hg_mainnavi_bt_04_active.gif","hg_mainnavi_bt_05_active.gif","hg_mainnavi_bt_06_active.gif","hg_mainnavi_bt_07_active.gif","hg_mainnavi_bt_08_active.gif","hg_mainnavi_bt_09_active.gif","hg_mainnavi_bt_10_active.gif","hg_mainnavi_bt_11_active.gif");