startList = function() {
if (document.all&&document.getElementById) {
        navRoot = document.getElementById("nav");
                for (i=0; i<navRoot.childNodes.length; i++) {
                        node = navRoot.childNodes[i];
                        if (node.nodeName=="LI") {
                                node.onmouseover=function() {
                                        this.className+=" over";
                                }
                        node.onmouseout=function() {
                                this.className=this.className.replace
                                (" over", "");
                                }
                        }
                }
        }
}
window.onload=startList;
function promocja() {window.open('promocja.php','',"top = 50, left =100 ,toolbar = no,resizable=1, width=640, height=450");}