/* Copyright (c) 2008 Brandon Aaron (http://brandonaaron.net)
 * Dual licensed under the MIT (http://www.opensource.org/licenses/mit-license.php) 
 * and GPL (http://www.opensource.org/licenses/gpl-license.php) licenses.
 *
 * $LastChangedDate$
 * $Rev$
 *
 * Version 0.2
 *
 * Usage: 
 *   $("input[name=q]")
 *      .val("Search")    // set an initial value if it doesn't already exist
 *      .clearonfocus();  // prepare the element for clearing on focus
 */

jQuery.fn.clearonfocus = function() {
    return this
		.bind('focus', function() {
		    // Set the default value if it isn't set
		    if (!this.defaultValue) this.defaultValue = this.value;
		    // Check to see if the value is different
		    if (this.defaultValue && this.defaultValue != this.value) return;
		    // It isn't, so remove the text from the input
		    this.value = '';
		    $(this).css('color', 'black');
		})
		.bind('blur', function() {
		    // If the value is blank, return it to the defaultValue
		    if (this.value.match(/^\s*$/)) {
		        this.value = this.defaultValue;
		        $(this).css('color', '#cdcdcd');
		    }

		});
};