function calc(ext1, ext2){
	var wtext, laext, i, h, theval, result;
	wtext = ext1;
	laext = ext2;
  	wtext.value = laext.value.length;
  	i = parseInt(laext.value.length);
  	h = 1000;
	theval = laext.value;
	result = 0;
 	if(i == 0){
 		result = h;
	}else{
		h = h - i;
		result = h;
    }
	if(result < 0){
		laext.value = theval.substring(0, 1000);
		result = 0;
		wtext.value = result;
	}else{
		wtext.value = result;		
	}
}