I've got a jQuery script I use for hiding/showing default values in small forms:

Code:
$("#contactForm .textField").focus(function() {
	if (!default_values[this.id]) {
		default_values[this.id] = this.value;
	}
	if (this.value == default_values[this.id]) {
		this.value = '';
	}
	$(this).blur(function() {
		if (this.value == '') {
			this.value = default_values[this.id];
		}
	});
});
The issue is that I need to use this script on multiple fields (with the same CSS class) within the same form. What syntax changes need to be made? Right now -- this script will work for the first field you click in -- but won't work for the other fields in the same form.

Thank you for your help.