if (document.images)
{
      preload_image_object = new Image();
     
      image_url = new Array();
      image_url[0] = "img2/ofirmie1.png";
      image_url[1] = "img2/szkolenia1.png";
      image_url[2] = "img2/galeria1.png";
	  image_url[3] = "img2/kontakt1.png";
	  image_url[4] = "img/ramka_pom.png";
	  image_url[5] = "img/ramka_pom2.png";
      

       var i = 0;
       for(i=0; i<=5; i++) 
         preload_image_object.src = image_url[i];
}


function heightsetings()
{
	var height = document.getElementById("center").offsetHeight;
	document.getElementById("left").style.height=height+'px';
	document.getElementById("right").style.height=height+'px';	
}