Led flash in 'c'

/* LED's ON one by one from left to right and right to left with 0.25 sec delay in PORTA*/

#include <p24FJ128GA010.h>

#define DELAY 15625 //31250,0.5 sec //62500,1 sec delay//


main ()
{
	//Code goes here 
    AD1PCFG = 0xFFFF; 		// all pins are digital
	TRISA = 0xFF00;  	    // bit 0-7 output,bit 8-15 input
	T1CON = 0x8030;  	 	// timer1 on,input clock prescale 256,internal clock(FOSC/2)
     

	LATAbits.LATA0 = 1;
	TMR1 = 0;
	while(TMR1< DELAY)
  		{
		
	    }
	LATAbits.LATA0 = 0;
	LATAbits.LATA1 = 1;
	
	TMR1 = 0;
	while(TMR1< DELAY)
  		{
		
	    }
	LATAbits.LATA1 = 0;
	LATAbits.LATA2 = 1;
	
	TMR1 = 0;
	while(TMR1< DELAY)
  		{
		
	    }
	LATAbits.LATA2 = 0;
	LATAbits.LATA3 = 1;
   
	TMR1 = 0;
	while(TMR1< DELAY)
  		{
		
	    }
	LATAbits.LATA3 = 0;
	LATAbits.LATA4= 1;
    
	
	TMR1 = 0;
	while(TMR1< DELAY)
  		{
		
	    }
	LATAbits.LATA4 = 0;
	LATAbits.LATA5= 1;

	TMR1 = 0;
	while(TMR1< DELAY)
  		{
		
	    }
	LATAbits.LATA5 = 0;
	LATAbits.LATA6= 1;

	TMR1 = 0;
	while(TMR1< DELAY)
  		{
		
	    }
	LATAbits.LATA6 = 0;
	LATAbits.LATA7= 1;

//	TMR1 = 0;
//	while(TMR1< DELAY)
  //		{
		
//	    }
//	LATAbits.LATA7 = 0;
	        
	TMR1 = 0;
	while(TMR1< DELAY)
  		{
		
	    }
	LATAbits.LATA7 = 0;
	LATAbits.LATA6 = 1;
	
	TMR1 = 0;
	while(TMR1< DELAY)
  		{
		
	    }
	LATAbits.LATA6 = 0;
	LATAbits.LATA5 = 1;
	
	TMR1 = 0;
	while(TMR1< DELAY)
  		{
		
	    }
	LATAbits.LATA5 = 0;
	LATAbits.LATA4 = 1;
   
	TMR1 = 0;
	while(TMR1< DELAY)
  		{
		
	    }
	LATAbits.LATA4 = 0;
	LATAbits.LATA3= 1;
    
	
	TMR1 = 0;
	while(TMR1< DELAY)
  		{
		
	    }
	LATAbits.LATA3 = 0;
	LATAbits.LATA2= 1;

	TMR1 = 0;
	while(TMR1< DELAY)
  		{
		
	    }
	LATAbits.LATA2 = 0;
	LATAbits.LATA1= 1;

	TMR1 = 0;
	while(TMR1< DELAY)
  		{
		
	    }
	LATAbits.LATA1 = 0;
	LATAbits.LATA0= 1;

}

main ()
{
unsigned char Mask;
    //Code goes here 
    AD1PCFG = 0xFFFF;         // all pins are digital
    TRISA = 0xFF00;          // bit 0-7 output,bit 8-15 input
    T1CON = 0x8030;           // timer1 on,input clock prescale 256,internal clock(FOSC/2)
 
    while(1){	                //loop forever
        for(Mask=1;Mask!=0;Mask<<=1){
            LATA=Mask;
            TMR1 = 0;
            while(TMR1< DELAY);
        }
    }

    while(1){	                //loop forever
        Mask=1;			//start with bit 0
        while(Mask!=0){		//do until bit shifts out the end
            LATA=Mask;		//output it
            TMR1 = 0;		//reset timer
            while(TMR1< DELAY);	//do delay
            Mask=Mask<<1;	//shift mask left 1 place
        }
    }

while(Mask ==1){		//do until bit shifts out the end