PIC headache

#include <HTC.h>
/*
#########################
# Program to blink LEDs #
#########################
*/
__CONFIG(FOSC_XT & WDTE_OFF & LVP_OFF & CPD_OFF & CP_OFF);

/*We need to include the header file “pic.h” which contains all the device related information*/

#include <pic.h> 

/*_XTAL_FREQ is used in delay functions, im using a 4 MHZ canned oscillator*/
#define _XTAL_FREQ 4000000

void main(void)
{
/*PORT B is given an initial value of all high, i.e. now all the LEDs will glow*/

PORTB = 0b00001111;

   /*TRISB is used to set the direction of PORT B, 0 means PORT B will function as Output Port and 1 means Input Port*/

   TRISB = 0b00000000;

   /*Infinite loop is used to keep the LEDs blinking*/

   while(1)
      {
      /*The __delay_ms(1000) is used to create a delay of 1000ms. This is a special function defined in “pic.h”. Alternatively one could write a empty loop to create a delay.*/

      __delay_ms(1000);
      PORTB = 0b00000000; //All LEDs Off
      __delay_ms(1000);
      PORTB = 0b00001111; //All LEDs On

      }
   }
/*---END---*/

void delay1s()
   {
   int x = 10;
   while(x--)
     __delay_ms(100);
   }