//************************************************************************** // JavaScript utility functions // // checkRadio(s) - determine if a radio option has been selected, // returns index of selected option or -1 if no selection // formatDecimals(s) - format an amount, return with two decimal positions // goToNextForm(s [,s]) - go to the next .html or .jsp form // isDomBrowser - determine if a browser is W3C DOM-capable // //************************************************************************** // Copyright (c) 2002, Bits & Bytes Programming, Inc. // ALL RIGHTS RESERVED // http://www.web400.com //************************************************************************** // You may freely use these utilities in any programs or files that // you develop, provided that you include the copyright notice // shown above. //************************************************************************** //**************************************************************** // determine if a radio option has been selected // // arguments // radio - name of the radio button set to check // // returns // index of selected option (0..n) // -1 if no selected option //**************************************************************** function checkRadio(radio) { for (var i=0; i < radio.length; i++) { if (radio[i].checked) { return i; } } return -1; } //**************************************************************** // format an amount so that it is returned with two decimal // positions. // // arguments // amount - amount to be formatted. May already contain // decimal point and decimal place digits. //**************************************************************** function formatDecimals(amount) { var regexpDec2 = /[.]\d\d/; var regexpDec1 = /[.]\d/; var regexpDec0 = /[.]/; if (regexpDec2.test(amount)) { return amount; } else if (regexpDec1.test(amount)) { return amount + "0"; } return amount + ".00"; } //**************************************************************** // go to the next form // // arguments // formName - name of the form to go to // fromForm - (optional) name of form submitting from, if more // than one form in the section. // If the fromForm name is not supplied, forms[0] // (the first or only form) is used. //**************************************************************** function goToForm(formName, fromForm) { var form = fromForm ? fromForm : 0; document.forms[form].action = formName; document.forms[form].submit(); } //**************************************************************** // isDomBrowser - determine if the reported user agent (browser) // is a W3C DOM-capable browser // // returns // true - browser is one of those known to be DOM capable // MSIE 5+ // Netscape6 (function does not test for other verions) // false - browser is not known to be DOM capable //**************************************************************** function isDomBrowser() { var ua = navigator.userAgent; var msie = ua.indexOf('MSIE'); var netscape = ua.indexOf('Netscape6'); var opera = ua.indexOf('Opera'); //************************************************************ // Opera - reports as MSIE, but not fully DOM-capable //************************************************************ if (opera > 0) { return false; } //************************************************************ // Microsoft Internet Explorer - check for major version >= 5 //************************************************************ if (msie > 0) { var majorVersion = parseInt(ua.substring(msie + 5, ua.indexOf(".", msie))); if (majorVersion >= 5) { return true; } else { return false; } } //************************************************************ // Netscape6 //************************************************************ if (netscape > 0) { return true; } //************************************************************ // Not MSIE 5+ or Netscape6, not known to be DOM-capable //************************************************************ return false; }