function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImages() {
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		header_07_over = newImage("common/header_07-over.jpg");
		header_08_over = newImage("common/header_08-over.jpg");
		header_09_over = newImage("common/header_09-over.jpg");
		header_10_over = newImage("common/header_10-over.jpg");
		button_contact_01_over = newImage("common/button_contact_01-over.jpg");
		preloadFlag = true;
	}
}

function winopen(urls){
	window.open(urls,'access','width=340,height=380,scrollbars=yes');
}

function winopen2(urls){
	window.open(urls,'access','width=340,height=500,scrollbars=yes');
}

function winopen3(urls){
	window.open(urls,'access','width=580,height=500,scrollbars=yes');
}