How to use more than one validator on button click ?

Hi,

I have 2 text boxes and 3 drop down lists as mandatory fields. I am using javascript and asp .net validator for validation. When I click on the submit button all the 5 validator should work. But in my code only one validator is working.

My javascript code is:

var Page_IsValid = false;

Page_IsValid =Page_ClientValidate('valgrpCode');

Page_IsValid = Page_ClientValidate('valgrpDescription');

Page_IsValid = Page_ClientValidate('valgrpCategory');

and my asp code is:

and also here i am showing "*" as mandatory message. But I need to change the color of label as mandatory message. I have added labels for each text boxes and drop down lists.