function msover(name)
{	if (document.images)
	{	document.images[name].src = eval (name + "_on.src");
	}
}

function msout(name)
{	if (document.images)
	{	document.images[name].src = eval (name + "_off.src");
	}
}

	if (document.images){
		gl_off = new Image();
		gl_off.src = "http://www.wyspiarzniebieski.pl/templates/public/gfx/des/butt/gl_off.gif";
		gl_on = new Image();
		gl_on.src = "http://www.wyspiarzniebieski.pl/templates/public/gfx/des/butt/gl_on.gif";
		
		kn_off = new Image();
		kn_off.src = "http://www.wyspiarzniebieski.pl/templates/public/gfx/des/butt/kn_off.gif";
		kn_on = new Image();
		kn_on.src = "http://www.wyspiarzniebieski.pl/templates/public/gfx/des/butt/kn_on.gif";								
	}
	
	function displayWindow(url, width, height) {
window.open(url,"displayWindow",'width=' + width + ',height=' + height + ',resizable=no,scrollbars=no,menubar=no, top='+((screen.availHeight/2)-(height/2))+',left='+((screen.availWidth/2)-(width/2)));
}
function EnablePopUp(url)
{
   var popup = document.getElementById("popup");
   var windowWidth = document.documentElement.clientWidth;  
   var windowHeight = document.documentElement.clientHeight;  

   var close = document.getElementById("popupClose");
   close.setAttribute('href','#');
   
   popup.onclick = function()
   {
      if(url != '') window.open(url, '_blank');
      DisablePopUp(); return false;
   }	 
	 
	 
	 
	 popup.style.display = 'block';
	 
	 var top = windowHeight/2 - popup.offsetHeight/2;
	 var left = windowWidth/2 - popup.offsetWidth/2;
	 
	 
	 close.style.zIndex = '2000';
	 close.style.left = popup.offsetWidth-30+'px';
	 popup.style.top = top+'px';
	 popup.style.left = left+'px';


}

function DisablePopUp() {
   document.getElementById('popup').style.display = 'none';
}