function preloader() 
{
     // counter
     var i = 0;

     // create object
     imageObj = new Image();

     // set image list
     images = new Array();
	images[0]="./images/menu/sk-m-aktuality-on.png";
	images[1]="./images/menu/sk-m-aktuality-v.png";
	images[2]="./images/menu/sk-m-aktuality.png";
	images[3]="./images/menu/sk-m-verejne-osvetlenie-on.png";
	images[4]="./images/menu/sk-m-verejne-osvetlenie-v.png";
	images[5]="./images/menu/sk-m-verejne-osvetlenie.png";
	images[6]="./images/menu/sk-m-kontakt-on.png";
	images[7]="./images/menu/sk-m-kontakt-v.png";
	images[8]="./images/menu/sk-m-kontakt.png";
	images[9]="./images/menu/sk-m-partneri-on.png";
	images[10]="./images/menu/sk-m-partneri-v.png";
	images[11]="./images/menu/sk-m-partneri.png";
	images[12]="./images/menu/sk-m-produkty-on.png";
	images[13]="./images/menu/sk-m-produkty-v.png";
	images[14]="./images/menu/sk-m-produkty.png";
	images[15]="./images/menu/sk-m-referencie-on.png";
	images[16]="./images/menu/sk-m-referencie-v.png";
	images[17]="./images/menu/sk-m-referencie.png";
	images[18]="./images/menu/sk-m-sluzby-on.png";
	images[19]="./images/menu/sk-m-sluzby-v.png";
	images[20]="./images/menu/sk-m-sluzby.png";
	images[21]="./images/menu/sk-m-spolocnost-on.png";
	images[22]="./images/menu/sk-m-spolocnost-v.png";
	images[23]="./images/menu/sk-m-spolocnost.png";

     // start preloading
     for(i=0; i<=23; i++) 
     {
          imageObj.src=images[i];
     }
	 //alert("Images preloaded.");
}