function commonPreload() {
	imgSwap = new Array();
	preloadFlag = false;

	imgSwap["navm_01"] = new Image();
	imgSwap["navm_01"].src = "/jpn/shared/img/navm_01o.gif";
	imgSwap["navm_02"] = new Image();
	imgSwap["navm_02"].src = "/jpn/shared/img/navm_02o.gif";
	imgSwap["navm_03"] = new Image();
	imgSwap["navm_03"].src = "/jpn/shared/img/navm_03o.gif";
	imgSwap["navm_04"] = new Image();
	imgSwap["navm_04"].src = "/jpn/shared/img/navm_04o.gif";
	imgSwap["navm_05"] = new Image();
	imgSwap["navm_05"].src = "/jpn/shared/img/navm_05o.gif";
	imgSwap["navm_06"] = new Image();
	imgSwap["navm_06"].src = "/jpn/shared/img/navm_06o.gif";
	imgSwap["navm_07"] = new Image();
	imgSwap["navm_07"].src = "/jpn/shared/img/navm_07o.gif";

	imgSwap["button_01"] = new Image();
	imgSwap["button_01"].src = "/jpn/shared/img/button_01o.gif";
	imgSwap["button_02"] = new Image();
	imgSwap["button_02"].src = "/jpn/shared/img/button_02o.gif";

	preloadFlag = true;
	return true;
}