var o_id =1;
	stan = new Array();
	e =new Array();
	e[1] = document.getElementsByName('zdj1');
	e[2] = document.getElementsByName('zdj2');
	e[3] = document.getElementsByName('zdj3');
	e[4] = document.getElementsByName('zdj4');
	function obrazki()
	{	

		
			o_id++;
		if(o_id==5)
		{
			o_id=1;
		}
             	//	stan[1]="hidden";
             		stan[2]="hidden";
             		stan[3]="hidden";
             		stan[4]="hidden";
             		stan[o_id]="visible";

	
	for(var x=1;x<5;x++)
	{
		for(var i=0;i<e[x].length;i++)
		{
			e[x][i].style.visibility = stan[x];
		}
	}			

	
}  setInterval("obrazki()", 1000);