/*
** Magic-Tours navigation-script
** (c) by Johanner Ernesti 2006
*/

function setUpNavigation()
    {
    var imgs = document.getElementsByTagName("img");

    var navis = Array();
    for(var h1 = 0; h1 < imgs.length; h1++)
        {
        i = imgs[h1];
        if(i.className.search(/navi/) != -1)
            {
            i.onmouseover = naviStartHover;
            i.onmouseout = naviEndHover;
            i.onclick = naviClick;
            navis.push(i);
            }
        }

    // preload all images
    for(var i = 0; i < navis.length; i++)
        {
        var img = document.createElement("img");
        img.src = navis[i].src.replace(/normal/, "hover");
        img.style.display = "none";
        document.getElementsByTagName("body")[0].appendChild(img);
        }
    }

function naviStartHover()
    {
    this.setAttribute("src", this.src.replace(/normal/, "hover"));
    showDropDownMenu(this.id);
    }

function naviEndHover()
    {
    this.setAttribute("src", this.src.replace(/hover/, "normal"));
    hideDropDownMenu(this.id);
    }