var times   = 10;
var step    = 17;
var warunek = 14;
var width_d = 85;

var el_count;
var el_max_count;
var iteracje;

function move_right(i, div_1)
{
	var div_rotate; 
   var block;	
   var left_p;
	
	div_rotate = document.getElementById("div_rot"+div_1);
	block      = div_rotate.block;
	left_p     = div_rotate.left_p;
	
	if (iteracje<=warunek && left_p<0) {
		if(iteracje==0)
	   {
	      document.getElementById('strz_prawo'+'_'+div_1).style.visibility = 'visible';
	   }
		iteracje = iteracje + 1;
		if(iteracje%2 == 0){
		   left_p=left_p+i;
		}
		else{
		   left_p=left_p+i;
		}		
		div_rotate.style.left=left_p;
		div_rotate.left_p = left_p;
		setTimeout("move_right(step, "+div_1+");", times);
	}
	else{
	   iteracje = 0;
	}
	if(left_p==0)
	{
	  document.getElementById('strz_lewo'+'_'+div_1).style.visibility = 'hidden';
	}
}


function move_left(i, div_1)
{
	var div_rotate; 
	var block;
	var left_p;
	
	div_rotate = document.getElementById("div_rot"+div_1);
	block      = div_rotate.block;
	left_p     = div_rotate.left_p;
			    
	if (iteracje<=warunek && left_p>-(block)) {
		if(iteracje==0)
	   {
	      document.getElementById('strz_lewo'+'_'+div_1).style.visibility = 'visible';
	   }
		iteracje = iteracje + 1;
		if(iteracje%2 == 0){
		   left_p=left_p-i;
		}
		else{
		   left_p=left_p-i;
		}
		div_rotate.style.left=left_p;
		div_rotate.left_p = left_p;
		setTimeout("move_left(step, "+div_1+");", times);

	}else{
	   iteracje = 0;
	}
	
	if(left_p<=(-block))
	{
	  document.getElementById('strz_prawo'+'_'+div_1).style.visibility = 'hidden';
	}
}  

function start_positon(el_count, el_max_count, div_1, img_nr)
{
	var img_start = img_nr*1+1;
	var przesuniecie = (img_start>1 && img_start<=el_count && img_start-4>=0) ? (((img_start-4)<=(el_count-6)) ? img_start-4 : el_count-6) : 0; 
	var div_rotate;

	div_rotate            = document.getElementById("div_rot"+div_1);
	div_rotate.block      = el_count*width_d-(el_max_count*width_d);
	div_rotate.left_p     = -przesuniecie*width_d;
	div_rotate.style.left = -przesuniecie*width_d;
	
	if(el_count<=6 || przesuniecie==0){
	   document.getElementById('strz_lewo'+'_'+div_1).style.visibility = 'hidden';
	}
	
	if(el_count<=6 || przesuniecie==(el_count-6)){
      document.getElementById('strz_prawo'+'_'+div_1).style.visibility = 'hidden';
   }
}