<!--
versOk = ( ((navigator.appName == "Netscape")&& 
            (parseInt(navigator.appVersion) >= 3)) ||
                   ((navigator.appName == "Microsoft Internet Explorer")&&
            (parseInt(navigator.appVersion)>=4))
          );

if (versOk) 
{		
  a1 = new Image();   a1.src ="../files/m_1off.png"
  a2 = new Image();   a2.src ="../files/m_1on.png"
  b1 = new Image();   b1.src ="../files/m_2off.png"
  b2 = new Image();   b2.src ="../files/m_2on.png"
  c1 = new Image();   c1.src ="../files/m_3off.png"
  c2 = new Image();   c2.src ="../files/m_3on.png"
  d1 = new Image();   d1.src ="../files/m_4off.png"
  d2 = new Image();   d2.src ="../files/m_4on.png"
  e1 = new Image();   e1.src ="../files/m_5off.png"
  e2 = new Image();   e2.src ="../files/m_5on.png"
  f1 = new Image();   f1.src ="../files/m_6off.png"
  f2 = new Image();   f2.src ="../files/m_6on.png"
  g1 = new Image();   g1.src ="../files/m_7off.png"
  g2 = new Image();   g2.src ="../files/m_7on.png"
  h1 = new Image();   h1.src ="../files/m_8off.png"
  h2 = new Image();   h2.src ="../files/m_8on.png"
  i1 = new Image();   i1.src ="files/enteron.gif"
  i2 = new Image();   i2.src ="files/enteroff.png"
}
function rollOn(n)
{
 if (versOk)
        {
	   light=eval(n+"2.src");
           document [n].src=light;
        }
}

function rollOff(n)
{
 if (versOk)
        {
           dark=eval(n+"1.src");
           document [n].src=dark;
        }
}
//-->