/**
 * placeholder
 * Clear a default input value on focus
 * @param {Object} input with a value to clear
 */
jQuery.fn.placeholder = function() {
	return this.each(function() {
		var el = jQuery(this);
		
		el.each(function() {
			var input = jQuery(this);
			var inputValue = jQuery(this).val();
			el.focus(function(){
				if (jQuery(this).val() == inputValue) {
					el.val("");
				}
			});
			el.blur(function(){
				if (el.val() == "") {
					el.val(inputValue);
				}
			});
		});
	});
}

/**
 * inArray
 * array search
 * @param {Array} array to search 
 * @param {Mixed} value to search
 */
jQuery.fn.inArray = function(array, value) { 
    var i;
	for (i=0; i < array.length; i++) {
		if (array[i] === value) {
			return true;
		}
	}
	return false;
}