function ValidateForm(f){

      with(f){
         if (isEmpty(_10_Name.value)) {
            alert("Please enter your Name");
            _10_Name.focus();
            return false;
         }

         if (isEmpty(_15_Email_From.value)) {
            alert("Please enter your Email Address");
            _15_Email_From.focus();
            return false;
         }

         if ( !isEmail(_15_Email_From.value) ) {
            alert("Please enter a valid Email Address.");
            _15_Email_From.focus();
            return false;
         }
		 
    		 if (isEmpty(_20_Telephone.value)) {
                alert("Please enter your Telephone number");
                _20_Telephone.focus();
                return false;
             }
         
         if (isEmpty(_25_State.value)) {
                 alert("Please enter your State");
                 _25_State.focus();
                 return false;
              }
		 
   	}
   return true;
 }