function switchTab(index)
{  
    index = index-1;      
    pages = getChildArray(mp,"DIV");
    tabs = getChildArray(tab,"A");
    resetPages();
    resetTabs();
    pages[index].style.display = 'block';
    tabs[index].className = tabActiveClass;   
}

function resetPages()
{
    pages = getChildArray(mp,"DIV");
    for (i=0;i<pages.length;i++)
    {
        pages[i].style.display = 'none';
    }
}

function resetTabs()
{
    tabs = getChildArray(tab,"A");   
    for (i=0;i<tabs.length;i++)
    {
        tabs[i].className = tabInactiveClass;
    }
}

function getChildArray(obj , tag)
{
    childs = new Array();
    for(i=0;i<obj.childNodes.length;i++)
    {
        if(obj.childNodes[i].tagName == tag)
            childs[childs.length] = obj.childNodes[i];
    }
    return childs;
}