function swicz(id)
{
	   if(id == "zj3" ) {
		   
	   z_close('zj1');
	   document.img_zj1.src='images/wybor_internet_off.gif';
	   
	   z_close('zj2');
	   document.img_zj2.src='images/wybor_tv_off.gif';
	   
	   z_open(id);
	   document.img_zj3.src='images/wybor_tel_on.gif';
	   } else if (id == "zj2" ) {
		   
	   z_close('zj3');
	   document.img_zj3.src='images/wybor_tel_off.gif';
	   
	   z_close('zj1');
	   document.img_zj1.src='images/wybor_internet_off.gif';
	   
	   z_open(id);
	   document.img_zj2.src='images/wybor_tv_on.gif';
	   
	   } else {
		   
	   z_close('zj3');
	   document.img_zj3.src='images/wybor_tel_off.gif';
	   
	   z_close('zj2');
	   document.img_zj2.src='images/wybor_tv_off.gif';
	   
	   z_open(id);
	   document.img_zj1.src='images/wybor_internet_on.gif';
	   }
}

function z_close(id)
{
   if(document.getElementById) {
      element = document.getElementById(id);
   } else if(document.all) {
      element = document.all[id];
   } else return;

   if(element.style) {
     element.style.display = 'none';
  }
}
function z_open(id)
{
   if(document.getElementById) {
      element = document.getElementById(id);
   } else if(document.all) {
      element = document.all[id];
   } else return;

   if(element.style) {
     element.style.display = 'block';
  }
}


function openClose(id)
{
   if(document.getElementById) {
      element = document.getElementById(id);
   } else if(document.all) {
      element = document.all[id];
   } else return;

   if(element.style) {
      if(element.style.display == 'block' ){
         element.style.display = 'none';
      } else {
         element.style.display = 'block';
		 }
   }
}