var gAction = "false";
var gPreLoadList = new Array("/common/images/nav_g_01_on.gif"
	,"/common/images/nav_g_02_on.gif"
	,"/common/images/nav_g_03_on.gif"
	,"/common/images/nav_g_04_on.gif"
	,"/common/images/nav_g_05_on.gif"
	,"/common/images/nav_g_06_on.gif"
	,"/common/images/nav_g_07_on.gif"
	,"/common/images/nav_gs_01_on.gif"
	,"/common/images/nav_gs_02_on.gif"
	,"/common/images/nav_gs_03_on.gif"
	,"/common/images/nav_gs_04_on.gif"
	,"/common/images/nav_gs_05_on.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;
 	}
}