var delay=0;
var timerID;
var currentMenu='';

var imagesAry = new Array();
imagesAry[0] = new Image(); imagesAry[0].src = "../pics/science/menu_home.gif";
imagesAry[1] = new Image(); imagesAry[1].src = "../pics/science/menu_home2.gif";
imagesAry[2] = new Image(); imagesAry[2].src = "../pics/science/menu_products.gif";
imagesAry[3] = new Image(); imagesAry[3].src = "../pics/science/menu_products2.gif";
imagesAry[4] = new Image(); imagesAry[4].src = "../pics/science/menu_download.gif";
imagesAry[5] = new Image(); imagesAry[5].src = "../pics/science/menu_download2.gif";
imagesAry[6] = new Image(); imagesAry[6].src = "../pics/science/menu_news.gif";
imagesAry[7] = new Image(); imagesAry[7].src = "../pics/science/menu_news2.gif";
imagesAry[8] = new Image(); imagesAry[8].src = "../pics/science/menu_contacts.gif";
imagesAry[9] = new Image(); imagesAry[9].src = "../pics/science/menu_contacts2.gif";

function allowDropdown()
{
  if (document.all)
    return true;
  else
    return false;
}

function highlightMenu(menuId)
{
  imgId = menuId+"_img";
  var imgName = document.images[imgId].src;

  last = imgName.lastIndexOf("2.gif");
  if (last>=0)
    return;
    
  imgName = document.images[imgId].src.substr(0,document.images[imgId].src.length-4);
  document.images[imgId].src = imgName+"2.gif";
}

function darkenMenu(menuId)
{
  imgId = menuId+"_img";
  var imgName = document.images[imgId].src;

  last = imgName.lastIndexOf("2.gif");
  if (last<0)
    return;
  
  var imgName = document.images[imgId].src.substr(0,document.images[imgId].src.length-5);
  document.images[imgId].src = imgName+".gif";
}
  
function showMenu(menuId)
{
  highlightMenu(menuId);
  clearTimeout(timerID);
  hideMenu(currentMenu);
  currentMenu = menuId;
  document.all[menuId].style.display='block';
}

function enterMenu(menuId)
{
  highlightMenu(menuId);
  clearTimeout(timerID);
}

function exitMenu(menuId)
{
  darkenMenu(menuId);
  timerID = setTimeout ('hideMenu("'+menuId+'")', delay);
}

function hideMenu(menuId)
{
  if (currentMenu!='')
  {
    currentMenu = '';
    document.all[menuId].style.display='none';
  }
}

document.writeln(
"<table border=0 cellspacing=0 cellpadding=0 width=100% background='../pics/science/bg_science_top.gif'>"+
"<tr valign=top>"+
"<td><img src='../pics/science/space.gif' width=3></td>"+
"<td width=100%><img src='../pics/science/logo_science.gif' height=78></td>"+
"<td width=1><img src='../pics/science/menu_border.gif'></td>"+

"<td width=83>"+
"  <div"+
"    onmouseover='highlightMenu(\"menu_home\")'"+
"    onmouseout='darkenMenu(\"menu_home\")'"+
"  ><a href='science.html'><img id=menu_home_img border=0 src='../pics/science/menu_home.gif'></a></div>"+
"</td>"+
"<td width=1><img src='../pics/science/menu_border.gif'></td>"+

"<td width=83>"+
"  <div"+
"    onmouseover='showMenu(\"menu_products\")'"+
"    onmouseout='exitMenu(\"menu_products\")'"+
"  ><a href='products.html'><img border=0 id=menu_products_img src='../pics/science/menu_products.gif'></a></div>");
if (allowDropdown())
  document.writeln(
"  <div id='menu_products' style='position:absolute; display:none'"+
"    onmouseover='enterMenu(\"menu_products\")'"+
"    onmouseout='exitMenu(\"menu_products\")'"+
"  >"+
"  <table border=0 cellspacing=1 cellpadding=4>"+
"  <tr><td class=menu2><a href='products.html#dynals'>Dynals</a></td>"+
"  <tr><td class=menu2><a href='products.html#dynals-lib'>Dynals-lib</a></td>"+
"  <tr><td class=menu2><a href='products.html#fast'>FAST</a></td>"+
"  <tr><td class=menu2><a href='products.html#xpfit'>XPFit</a></td>"+
"  <tr><td class=menu2><a href='products.html#glsa'>GLSA</a></td>"+
"  <tr><td class=menu2><a href='products.html#ntsvd'>NTSVD</a></td>"+
"  </table>"+
"  </div>");
document.writeln(
"</td>"+

"<td width=1><img src='../pics/science/menu_border.gif'></td>"+

"<td width=83>"+
"  <div"+
"    onmouseover='showMenu(\"menu_downloads\")'"+
"    onmouseout='exitMenu(\"menu_downloads\")'"+
"  ><a href='downloads.html'><img border=0 id=menu_downloads_img src='../pics/science/menu_download.gif'></a></div>");
if (allowDropdown())
  document.writeln(
"  <div id='menu_downloads' style='position:absolute; display:none'"+
"    onmouseover='enterMenu(\"menu_downloads\")'"+
"    onmouseout='exitMenu(\"menu_downloads\")'"+
"  >"+
"  <table border=0 cellspacing=1 cellpadding=4>"+
"  <tr><td class=menu2><a href='downloads.html#products'>Products</a></td>"+
"  <tr><td class=menu2><a href='downloads.html#demos'>Demo&nbsp;Applications</a></td>"+
"  <tr><td class=menu2><a href='downloads.html#papers'>Papers</a></td>"+
"  </table>"+
"  </div>");
document.writeln(
"</td>"+

"<td width=1><img src='../pics/science/menu_border.gif'></td>"+

"<td width=83>"+
"  <div"+
"    onmouseover='highlightMenu(\"menu_news\")'"+
"    onmouseout='darkenMenu(\"menu_news\")'"+
"  ><a href='news.html'><img id=menu_news_img border=0 src='../pics/science/menu_news.gif'></a></div>"+
"</td>"+

"<td width=1><img src='../pics/science/menu_border.gif'></td>"+

"<td width=83>"+
"  <div"+
"    onmouseover='highlightMenu(\"menu_contacts\")'"+
"    onmouseout='darkenMenu(\"menu_contacts\")'"+
"  ><a href='../main/contacts.html'><img id=menu_contacts_img border=0 src='../pics/science/menu_contacts.gif'></a></div>"+
"</td>"+
"<td width=1><img src='../pics/science/menu_border.gif'></td>"+
"</table>"+

"<table border=0 cellspacing=15 cellpadding=0 width=100%>"+
"<tr><td>"
);