var ns = (document.layers) ? 1 : 0;
var ie = (document.all) ? 1 : 0;
var ns6= (!document.all && document.getElementById) ? 1 : 0;
var W = self.innerWidth;
var current="";
var cur="";

function showLayer(id) {
  if(ie) { document.all[id].style.visibility = 'visible';}
  else if (ns) { document.layers[id].visibility = 'visible';}
  else if(ns6) {document.getElementById(id).style.visibility = 'visible';}
}

function hideLayer(id) {
  if(ie) { document.all[id].style.visibility = 'hidden';}
  else if (ns) { document.layers[id].visibility = 'hide';}
  else if(ns6) {document.getElementById(id).style.visibility = 'hidden';}
}

function positionLayer(id,left,top) {
  if(ie) { 
	document.all[id].style.left = left;	
	document.all[id].style.top = top;	
  } else if (ns) { 
	document.layers[id].left = left;
	document.layers[id].top = top;
  } else {
	document.getElementById(id).style.left = left;
	document.getElementById(id).style.top = top;
  }
}

function change(id,img,warstwa)
{
 if(document.images)
 {
  if(ns) {
      warstwa ? document.layers[warstwa].document.images[id].src=img : document.images[id].src=img;
  } else {
  document.images[id].src=img;
  }
 }
}

function menu_off(id){
  if(id!='m1'){ change('m1','images/m_firma.gif','menu'); }
  if(id!='m2'){ change('m2','images/m_produkty.gif','menu'); }
  if(id!='m3'){ change('m3','images/m_uslugi.gif','menu'); } 
  if(id!='m4'){ change('m4','images/m_cennik.gif','menu'); }
  if(id!='m5'){ change('m5','images/m_kontakt.gif','menu'); }
  if(id!='m6'){ change('m6','images/m_napisz.gif','menu'); }
  if(id!='m7'){ change('m7','images/m_sklep.gif','menu'); }
}


function show(url,title,w,h) {
	var url='window.php?img='+url+'&title='+title;
	var showWindow = window.open(url,"ShowWindow",'top=20,left=40,width='+w+',height='+h+',scrollbars=no');
	showWindow.focus();
}



i1 = new Image(93,38); i1.src="images/m_firma_on.gif";
i2 = new Image(94,38); i2.src="images/m_cennik_on.gif";
i3 = new Image(94,38); i3.src="images/m_kontakt_on.gif";
i4 = new Image(94,38); i4.src="images/m_napisz_on.gif";
i5 = new Image(94,38); i5.src="images/m_produkty_on.gif";
i6 = new Image(178,38); i6.src="images/m_sklep_on.gif";
i7 = new Image(94,38); i7.src="images/m_uslugi_on.gif";