var gAction = "false";

var gPreLoadList = new Array("/en/common/images/navi01_pmc01_t01on.gif"
							,"/en/common/images/navi01_bus01_09on.gif"
							,"/en/common/images/navi01_bus01_08on.gif"
							,"/en/common/images/navi01_bus01_07on.gif"
);

function preLoad() {
	onImages = new Array();
	for (field in gPreLoadList) {
		onImages[field] = new Image();
		onImages[field].src = gPreLoadList[field];
	}
	gAction = "true";
	
	
	
}

function changeImage(imageName, fileName) {
	if (gAction == "true") {
		document.images[imageName].src = fileName;
	}
}

function RollOver (imageName,fileName) {
	if (gAction == "true") {
		  imageName.src = fileName;
 	}
}