var preImg = new Image();

preLoad();



function preLoad()
{
    preImg = new Image();
    preImg.src = 'img/back.jpg';
    preImg = new Image();
    preImg.src = 'img/null.gif';
    
    for(var i=1; i < 11; i++)
    {
        preImg = new Image();
        preImg.src = 'img/menu' +  i +'a.jpg';
    }

}

function attachMenuActions(aktywna)
{    
	var menuElements = document.getElementsByTagName("map");
    aktywna --;
  	for (var i=0; i<menuElements.length; i++)
    {
        if(i!=aktywna)
        {
      		menuElements[i].onmouseover=function()
            {
                 
                document.getElementById(this.name).style.backgroundImage='url(img/' + this.name + 'a.jpg)';
    		}
    
    		menuElements[i].onmouseout=function()
            {
                document.getElementById(this.name).style.backgroundImage='url(img/' + this.name + '.jpg)';
    		}
        }
    }
}



function hideAll()
{
	var menuElements = document.getElementById("mainMenu").getElementsByTagName("div");
	for (var i=0; i < menuElements.length; i++) 
    {
		menuElements[i].className = '';
	}
}