/*============================================================================== This routine enables standard keys to be used as hotkeys to either invoke a link, or to fire some JavaScript code. The hotkey should be pressed down at the aame time as either the control key, the alt key, or the Mac metakey. Calling Sequence: Don't worry about the parameter - just call as above. A hot key may either have a link associated with it, or some JavaScript code (typically a function). Note that because of the different keyboard layouts in use, and because of the way that JavaScript handles keyboard events, it is best to limit your range of hotkeys to the following characters: 0 to 9 A to Z a to z - . , Author: John Gardner Date: September 2004 Note that some of the techniques here have been picked up from Chapter 9 of "JavaScript and DHTML Cookbook", by Danny Goodman, published by O'Reilly. The routine should degrade gracefully in older browsers. The action keys are specified in a table. To add a new key, add a new array element - e.g. KeyActions [2]. The code below has been set up for the example page: htt://www.braemoor.co.uk/software/hotkeys.shtml Modify it as required for your web page. The three parts of the array element are as follows: character: the hot key actionType: either "link" or "code" param: either the URL for a hyperlink or the JavaScript code. When using hot keys in forms for buttons, radiobuttons, or checkboxes, ensure that you provide each with id and name attributes, with the same value. e.g. document.myform.submit.click(); document.myform.reset.click(); document.myform.radio[2].checked=true; ==============================================================================*/ // This array should be set up as required for YOUR web page. var keyActions = new Array (); keyActions [0] = {character: "q", actionType: "link", param: "javascript:DebugPopUp('http://www.nvrpa.org/debug.php?varType=session');"}; keyActions [1] = {character: "L", actionType: "code", param: "openPopup('images/image.jpg','The Fouda Blanc Sangle');"}; // End of user defined array function hotKeys (event) { // Get details of the event dependent upon browser event = (event) ? event : ((window.event) ? event : null); // We have found the event. if (event) { // Hotkeys require that either the control key or the alt key is being held down if (event.ctrlKey || event.altKey || event.metaKey) { // Pick up the Unicode value of the character of the depressed key. var charCode = (event.charCode) ? event.charCode : ((event.which) ? event.which : event.keyCode); // Convert Unicode character to its lowercase ASCII equivalent var myChar = String.fromCharCode (charCode).toLowerCase(); // Convert it back into uppercase if the shift key is being held down if (event.shiftKey) {myChar = myChar.toUpperCase();} // Now scan through the user-defined array to see if character has been defined. for (var i = 0; i < keyActions.length; i++) { // See if the next array element contains the Hotkey character if (keyActions[i].character == myChar) { // Yes - pick up the action from the table var action; // If the action is a hyperlink, create JavaScript instruction in an anonymous function if (keyActions[i].actionType.toLowerCase() == "link") { action = new Function ('location.href ="' + keyActions[i].param + '"'); } // If the action is JavaScript, embed it in an anonymous function else if (keyActions[i].actionType.toLowerCase() == "code") { action = new Function (keyActions[i].param); } // Error - unrecognised action. else { alert ('Hotkey Function Error: Action should be "link" or "code"'); break; } // At last perform the required action from within an anonymous function. action (); // Hotkey actioned - exit from the for loop. break; } } } } } /*============================================================================*/ function DebugPopUp(URL) { day = new Date(); id = day.getTime(); eval("page" + id + " = window.open(URL, '" + id + "', 'toolbar=0,scrollbars=1,location=0,statusbar=1,menubar=0,resizable=1,width=1000,height=800,left = 140,top = 112');"); }