function chwOpenWin (name, url, width, height) { // ver 0.1
	if(newWindow == null){ // undefined
		var trails="width=" + width + ",height=" + height + ",toolbar=no,directories=no,status=no,scrollbars=yes,resizable=no,menubar=no";
		var winname=name;
		var newWindow=window.open(url,winname,trails);
		//alert (newWindow.name);
		newWindow.focus();
	}else{
		//alert(newWindow.name);
		newWindow.focus();
	}
}