Jeditable

$(".hours").live("mouseover", function(){                              $(this).editable(function(value) {return(value);},
					{
type    : 'text',
select  : 'true',  					                                                                                         onblur  : 'submit',

callback: function(){

if($(this).text() == ''){
$(this).text("0.00");	//Set a blank number field to 0.0
							}
updateTotals();
						}
					});
				});