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) {
		search_btn_over = newImage("/images/search_01-over.gif");
		preloadFlag = true;
	}
}

function openwin(url,name,width,height) {
	if (window.screen) {
		cw = Math.floor((screen.availWidth-width)/2);
		ch = Math.floor((screen.availHeight-height)/2);
	}
	window.open(url,name,'width='+width+',height='+height+',top='+ch+',left='+cw+',directories=no,location=no,menubar=no,scrollbars=no,status=no,toolbar=no,resizable=no');
}