function hideDiv(idLabel) {
    var elem = document.getElementById?
               document.getElementById(idLabel): null;
    if (!elem) {
        return false;
    }
    elem.style.visibility='hidden';
    elem.style.display='none';
}

function showDiv(idLabel) {
    var elem = document.getElementById?
               document.getElementById(idLabel): null;
    if (!elem) {
        return false;
    }
    elem.style.visibility='visible';
    elem.style.display='block';
}

function toggleDiv(idLabel) {
    var elem = document.getElementById?
               document.getElementById(idLabel): null;
    if (!elem) {
        return false;
    }
    if (elem.style.visibility == 'visible') {
        return hideDiv(idLabel);
    } else {
        return showDiv(idLabel);
    }
}

function hideShowDivs(idDiv1, idDiv2) {
    var eDiv1 = document.getElementById? document.getElementById(idDiv1): null;
    var eDiv2 = document.getElementById? document.getElementById(idDiv2): null;
    if (eDiv1 && eDiv2) {
        eDiv1.style.visibility='hidden';
        eDiv1.style.display='none';
        eDiv2.style.visibility='visible';
        eDiv2.style.display='block';
    }
}

function m (tld, dom, addr, subj) {
    addr = "to:" + addr + "@";
    addr += dom + "." + tld;
    if (subj) {
        addr += "?subject=" + subj;
    }
    document.location.href = "mail" + addr;
}

function openPopup (id) {
    var elem = document.getElementById ? document.getElementById(id) : null;
    if (elem) {
        elem.style.visibility='visible';
        elem.style.display='block';
    }
}
function closePopup (id) {
    var elem = document.getElementById ? document.getElementById(id) : null;
    if (elem) {
        elem.style.visibility='hidden';
        elem.style.display='none';
    }
}

/** START OF POPUP CODE **/
/*************************************************************************
  This code is from Dynamic Web Coding at http://www.dyn-web.com/
  Copyright 2003 by Sharon Paine 
  See Terms of Use at http://www.dyn-web.com/bus/terms.html
  regarding conditions under which you may use this code.
  This notice must be retained in the code as is!
*************************************************************************/
var popupLayers = {
  timer: null,
  activeMenuID: null,
  offX: 4,   // horizontal offset 
  offY: 6,   // vertical offset 
  show: function(id, e, timeout) {
    if (timeout == undefined || timeout <= 0) {
        timeout = 500;
    }
    var mnu = document.getElementById? document.getElementById(id): null;
    if (!mnu) return;
    this.activeMenuID = id;
    if ( mnu.onmouseout == null ) mnu.onmouseout = this.mouseoutCheck;
    if ( mnu.onmouseover == null ) mnu.onmouseover = this.clearTimer;
    viewport.getAll();
    this.position(mnu,e,timeout);
  },
  
  hide: function() {
    this.clearTimer();
    if (this.activeMenuID && document.getElementById) 
      this.timer = setTimeout("document.getElementById('"+popupLayers.activeMenuID+"').style.visibility = 'hidden'", 0);
  },
  
  position: function(mnu, e, timeout) {
    var x = e.pageX? e.pageX: e.clientX + viewport.scrollX;
    var y = e.pageY? e.pageY: e.clientY + viewport.scrollY;
    
    if ( x + mnu.offsetWidth + this.offX > viewport.width + viewport.scrollX )
      x = x - mnu.offsetWidth - this.offX;
    else x = x + this.offX;
  
    if ( y + mnu.offsetHeight + this.offY > viewport.height + viewport.scrollY )
      y = ( y - mnu.offsetHeight - this.offY > viewport.scrollY )? y - mnu.offsetHeight - this.offY : viewport.height + viewport.scrollY - mnu.offsetHeight;
    else y = y + this.offY;
    
    mnu.style.left = x + "px"; mnu.style.top = y + "px";
    this.timer = setTimeout("document.getElementById('" + popupLayers.activeMenuID + "').style.visibility = 'visible'", timeout);
  },
  
  mouseoutCheck: function(e) {
    e = e? e: window.event;
    // is element moused into contained by popup? or is it popup (ul or li or a to popup div)?
    var mnu = document.getElementById(popupLayers.activeMenuID);
    var toEl = e.relatedTarget? e.relatedTarget: e.toElement;
    if ( mnu != toEl && !popupLayers.contained(toEl, mnu) ) popupLayers.hide();
  },
  
  // returns true of oNode is contained by oCont (container)
  contained: function(oNode, oCont) {
    if (!oNode) return; // in case alt-tab away while hovering (prevent error)
    while ( oNode = oNode.parentNode ) 
      if ( oNode == oCont ) return true;
    return false;
  },

  clearTimer: function() {
    if (popupLayers.timer) clearTimeout(popupLayers.timer);
  }
};

var viewport = {
  getWinWidth: function () {
    this.width = 0;
    if (window.innerWidth) this.width = window.innerWidth - 18;
    else if (document.documentElement && document.documentElement.clientWidth)
                this.width = document.documentElement.clientWidth;
    else if (document.body && document.body.clientWidth)
                this.width = document.body.clientWidth;
  },

  getWinHeight: function () {
    this.height = 0;
    if (window.innerHeight) this.height = window.innerHeight - 18;
        else if (document.documentElement && document.documentElement.clientHeight)
                this.height = document.documentElement.clientHeight;
        else if (document.body && document.body.clientHeight)
                this.height = document.body.clientHeight;
  },

  getScrollX: function () {
    this.scrollX = 0;
        if (typeof window.pageXOffset == "number") this.scrollX = window.pageXOffset;
        else if (document.documentElement && document.documentElement.scrollLeft)
                this.scrollX = document.documentElement.scrollLeft;
        else if (document.body && document.body.scrollLeft)
                this.scrollX = document.body.scrollLeft;
        else if (window.scrollX) this.scrollX = window.scrollX;
  },

  getScrollY: function () {
    this.scrollY = 0;
    if (typeof window.pageYOffset == "number") this.scrollY = window.pageYOffset;
    else if (document.documentElement && document.documentElement.scrollTop)
                this.scrollY = document.documentElement.scrollTop;
        else if (document.body && document.body.scrollTop)
                this.scrollY = document.body.scrollTop;
        else if (window.scrollY) this.scrollY = window.scrollY;
  },

  getAll: function () {
    this.getWinWidth(); this.getWinHeight();
    this.getScrollX();  this.getScrollY();
  }

};

/** END OF POPUP CODE **/