Led on and off program for AT89S51

#include<reg51.h>
sbit LED=P0^0;
void msdelay(unsigned int);
void main()
{
while(1)
{
LED=1;
msdelay(500);
LED=0;
msdelay(500);
}
}
void msdelay(unsigned int item)
{
unsigned int i,j;
for(i=0;i<=item;i++)
for(j=1;j<1275;j++);
}