/*
 * Clear Default Text: functions for clearing and replacing default text in
 * <input> elements.
 *
 * by Ross Shannon, http://www.yourhtmlsource.com/
 */

addEvent(window, 'load', init, false);

function init() {
// <input>
    var formInputs = document.getElementsByTagName('input');
    for (var i = 0; i < formInputs.length; i++) {
        var theInput = formInputs[i];
        
        if (theInput.type == 'text' && theInput.className.match(/\bcleardefault\b/)) {  
            /* Add event handlers */          
            eventHandlers(theInput);
        }
    }
    
// <textarea>
    var formTextareas = document.getElementsByTagName('textarea');
    for (var i = 0; i < formTextareas.length; i++) {
        var theTextarea = formTextareas[i];
        
        if (theTextarea.type == 'textarea' && theTextarea.className.match(/\bcleardefault\b/)) {  
            /* Add event handlers */          
            eventHandlers(theTextarea);
        }
    }
}

function clearDefaultText(e) {
    var target = window.event ? window.event.srcElement : e ? e.target : null;
    if (!target) return;
    
    if (target.value == target.defaultValue) {
        target.value = '';
    }
}

function replaceDefaultText(e) {
    var target = window.event ? window.event.srcElement : e ? e.target : null;
    if (!target) return;
    
    if (target.value == '' && target.defaultValue) {
        target.value = target.defaultValue;
    }
}

function eventHandlers(e)
{
/* Add event handlers */          
    addEvent(e, 'focus', clearDefaultText, false);
    addEvent(e, 'blur', replaceDefaultText, false);
    
    /* Save the current value */
    if (e.value != '') {
        e.defaultValue = e.value;
    }
}