var dolphintabs={
    subcontainers:[], last_accessed_tab:null,

    revealsubmenu:function(curtabref){
    this.hideallsubs()
    if (this.last_accessed_tab!=null)
        this.last_accessed_tab.className=""
    if (curtabref.getAttribute("rel")) //If there's a sub menu defined for this tab item, show it
    document.getElementById(curtabref.getAttribute("rel")).style.display="block"
    curtabref.className="current"
    this.last_accessed_tab=curtabref
    },

    hideallsubs:function(){
    for (var i=0; i<this.subcontainers.length; i++)
        document.getElementById(this.subcontainers[i]).style.display="none"
    },


    init:function(menuId, selectedIndex){
    var tabItems=document.getElementById(menuId).getElementsByTagName("a")
        for (var i=0; i<tabItems.length; i++){
            if (tabItems[i].getAttribute("rel"))
                this.subcontainers[this.subcontainers.length]=tabItems[i].getAttribute("rel") //store id of submenu div of tab menu item
            if (i==selectedIndex){ //if this tab item should be selected by default
                tabItems[i].className="current"
                this.revealsubmenu(tabItems[i])
            }
        tabItems[i].onmouseover=function(){
        dolphintabs.revealsubmenu(this)
        }
        } //END FOR LOOP
    }

}