jquery function to clear the default value from a text field, and replace it with the default field if it's still empty.

cleartextfield.js

	$(document).ready(function(){
		$('#emailfield').click(function() { 
		    if ($(this).val() == 'Your Email') {   
		        $(this).data('original', $(this).val()).val('');
		    }
		});

		$('#emailfield').blur(function() { 
		    if ($(this).val() == '') {   
		        $(this).val($(this).data('original'));
		    }
		});
		});