var PromptFormField = new Class({
	initialize: function(inputId, promptText) {
		this.inputId = inputId;
		this.promptText = promptText;
		var input = $(this.inputId);
		if (input) {
			input.value = this.promptText;
			input.addEvent('click', this.click.bindWithEvent(this));
			input.addEvent('blur', this.blur.bindWithEvent(this));
		}
	},
	click : function() {
		var input = $(this.inputId);
		if (input.value == this.promptText) {
			input.value = '';
		}
	},
	blur : function() {
		var input = $(this.inputId);
		if (input.value == '' || input.value == ' ') {
			input.value = this.promptText;
		}
	}
});