problem with jquery validation in rails


   i am using jquery validation, i used following code


  alert("click");     $("#validating").valid({       rules: {         "product_no":{           required: true         }       },       messages: {         "product_no":{           required: "Required"         }       }     }).element( "#bar-div" );     });

in order to handle validation by particular button i used button id btn1 and validate will not work inside button click so i am using valid 1) it is not showing according to rules,message

2) element("#bar-div") is not working, its validating whole form as i gave :class => :required in all textbox

is that any way to validate particular div with click action of button for displaying validation messages

thanks, -pab