function imgChange(offName,onName) {
	if (document.images) {
		imgName = new Array(2);
		imgName[0] = new Image();
		imgName[1] = new Image();
		imgName[0].src = offName;
		imgName[1].src = onName;
		return imgName;
	} else {
		return null;
	}
}
function imgOff(imgName) {
	if (document.images) {
		document[imgName].src = eval(imgName + "[0].src");
		return true;
	}
}
function imgOver(imgName) {
	if (document.images) {
		document[imgName].src = eval(imgName + "[1].src");
		return true;
	}
}

function winOpen(winName,url,W,H){
//サブウインドウオープン
	var WinD11=window.open(url,winName,'scrollbars=1,width='+W+',height='+H+'');
	WinD11.document.close()
}