/** * Filename : misc.js * Author : Robert Cerny * Created : 21.08.2004 * Last Change : 21.06.2005 * * Contains misc. useful javascript functions. * * Depends on : trans.js * * Copyright 2004 Robert Cerny */ /** * Write a string into a document. * Escapes the "script" problem. * WARNING: not tested in this form. * * string - the string to write * _document - the document to write to, if null the current document */ function _write(string, _document) { if (string == null || string.length == 0) return; if (_document == null) _document = document; var rest = string; var cut = rest.indexOf("script"); while (cut > 0) { _document.write(rest.substring(0, cut + 4)); rest = rest.substring(cut + 4); cut = rest.indexOf("script"); } _document.write(rest); } /** * Returns true if string is blank * * s - String to check */ function isBlankString(s) { for (var i = 0; i < s.length; i++) { var c = s.charAt(i); if ((c != ' ') && (c != '\n') && (c != '\t') && (c != '\r')) return false; } return true; } /** * Returns the value of a paramter passed in the query part of an url. * * parameter - the name of the parameter * url - the url to look in, if null the url of the current document */ function getURLParameterValue(parameter, url) { if (url == null) url = document.URL; var regex = "/.*" + parameter + "=([^&]*).*/"; var match = new RegExp(eval(regex)).exec(url); if (match != null && match[1] != null) return unescape(match[1]); else return null; } /** * Focuses on the field with id fieldId * * fieldId - the id of the field to focus on */ function _focus(fieldId) { var field = document.getElementById(fieldId); if (field != null && field.focus) { field.focus(); } } /** * Retrieve cookie. * * name - name of the cookie to retrieve */ function getCookie(name) { var dc = document.cookie; var prefix = name + "="; var begin = dc.indexOf("; " + prefix); if (begin == -1) { begin = dc.indexOf(prefix); if (begin != 0) return null; } else begin += 2; var end = document.cookie.indexOf(";", begin); if (end == -1) end = dc.length; return unescape(dc.substring(begin + prefix.length, end)); } /** * Sets a cookie. * * name - name of the cookie * value - value of the cookie * expires - expiration date of the cookie */ function setCookie(name, value, expires, path, domain, secure) { var _cookie = name + "=" + escape(value) + ((expires) ? "; expires=" + expires.toGMTString() : "") + ((path) ? "; path=" + path : "") + ((domain) ? "; domain=" + domain : "") + ((secure) ? "; secure" : ""); document.cookie = _cookie; } /** * http://www.crockford.com/javascript/remedial.html * Thanks to Douglas Crockford. */ function trim(_string) { if (_string == null) return null; return _string.replace(/^\s*(\S*(\s+\S+)*)\s*$/, "$1"); } /** * Inspects an object o. * Creates a new window and writes all properties of o to it. * * o - object to inspect */ function inspect(o) { var all = ""; for (var e in o) all += "

" + e + ": " + o[e] + "

"; all += ""; var newWindow = window.open(); newWindow.document.writeln(all); }