var prevPage = "";
var curPage = "";

if (document.images)
{   	
	    onas_on = new Image();
        onas_on.src = "img/images/dolores_top_ten_menu_2_02.gif";
        onas_off = new Image();
        onas_off.src = "img/images/dolores_top_ten_menu_02.gif";

		rozmiary_on = new Image();
        rozmiary_on.src = "img/images/dolores_top_ten_menu_2_03.gif";
        rozmiary_off = new Image();
        rozmiary_off.src = "img/images/dolores_top_ten_menu_03.gif";

		kolory_on = new Image();
        kolory_on.src = "img/images/dolores_top_ten_menu_2_04.gif";
        kolory_off = new Image();
        kolory_off.src = "img/images/dolores_top_ten_menu_04.gif";

		pomoc_on = new Image();
        pomoc_on.src = "img/images/dolores_top_ten_menu_2_05.gif";
        pomoc_off = new Image();
        pomoc_off.src = "img/images/dolores_top_ten_menu_05.gif";

		kontakt_on = new Image();
        kontakt_on.src = "img/images/dolores_top_ten_menu_2_06.gif";
        kontakt_off = new Image();
        kontakt_off.src = "img/images/dolores_top_ten_menu_06.gif";

		koszyk_on = new Image();
        koszyk_on.src = "img/images/dolores_top_ten_menu_2_07.gif";
        koszyk_off = new Image();
        koszyk_off.src = "img/images/dolores_top_ten_menu_07.gif";

		konto_on = new Image();
        konto_on.src = "img/images/dolores_top_ten_menu_2_08.gif";
		konto_off = new Image();
        konto_off.src = "img/images/dolores_top_ten_menu_08.gif";
}

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

function imgOff(itemName)
{	
	if (document.images && curPage != itemName) {
		document[itemName].src = eval(itemName + "_off.src");
	}

}

function centerWindow(pageUrl,pageTitle,pageWidth,pageHeight,pageSet) 
{ if(screen){ 
var page_width = pageWidth; 
var page_height = pageHeight; 
var page_set = pageSet; 
var page_top = (screen.height-page_height)/2; 
var page_left = (screen.width-page_width)/2; 
openPage=window.open(''+ pageUrl + '',''+ pageTitle + '','width=' + page_width + ',height=' + page_height + ',top=' + page_top + ',left=' + page_left + ',scrollbars=' + page_set + ''); 
openPage.focus(); 
} else { 
openPage=window.open(''+ pageUrl + '',''+ pageTitle + ''); 
openPage.focus(); 
} 
}