<!--
browser = (((navigator.appName == "Netscape") && (parseInt(navigator.appVersion) >= 3 )) || ((navigator.appName == "Microsoft Internet Explorer") && (parseInt(navigator.appVersion) >= 4 )))             
 
if (browser) 
{

    home_on = new Image();          
    home_on.src = "http://proteomics.unc.edu/images/home_on.gif";  
    home_off = new Image();   
    home_off.src = "http://proteomics.unc.edu/images/home_off.gif";

    offer_on = new Image();          
    offer_on.src = "http://proteomics.unc.edu/images/offer_on.gif";  
    offer_off = new Image();   
    offer_off.src = "http://proteomics.unc.edu/images/offer_off.gif";

    protocol_on = new Image();          
    protocol_on.src = "http://proteomics.unc.edu/images/protocol_on.gif";  
    protocol_off = new Image();   
    protocol_off.src = "http://proteomics.unc.edu/images/protocol_off.gif";

    submission_on = new Image();          
    submission_on.src = "http://proteomics.unc.edu/images/submission_on.gif";  
    submission_off = new Image();   
    submission_off.src = "http://proteomics.unc.edu/images/submission_off.gif";

    news_on = new Image();          
    news_on.src = "images/news_on.gif";  
    news_off = new Image();   
    news_off.src = "images/news_off.gif"; 

    about_on = new Image();          
    about_on.src = "http://proteomics.unc.edu/images/about_on.gif";  
    about_off = new Image();   
    about_off.src = "http://proteomics.unc.edu/images/about_off.gif";  

    links_on = new Image();          
    links_on.src = "http://proteomics.unc.edu/images/links_on.gif";  
    links_off = new Image();   
    links_off.src = "http://proteomics.unc.edu/images/links_off.gif";
 
}


function img_act(imgPicName,imgName) 
{
  if (browser) 
    {
      imgOn = eval(imgName + "_on.src");
      document [imgName].src = imgOn;

//      if (imgName == "about")
//        show_menu('about0','');
    }
}

function img_inact(imgPicName,imgName) 
{
  if (browser) 
  {
    imgOff = eval(imgName + "_off.src");
    document [imgName].src = imgOff;

    if (imgName == "about")
      hide_menu('about0','');
  }
}



////////////////////////////////////////////////////////////////////////////
   
      
function show_menu(menuCurrent,menuTop)
{
   switch (menuCurrent) 
   {
     case "about0":
          if(document.getElementById) //IE 5 and NS 6
			document.getElementById("about_menu0").style.visibility = "visible";		 
		 else if (navigator.appName == 'Netscape')
            document.layers.about_menu0.visibility="visible";
         else
            document.all.about_menu0.style.visibility="visible";
         break;
	
	case "about5":
          if(document.getElementById) //IE 5 and NS 6
			document.getElementById("about_menu5").style.visibility = "visible";		 
		 else if (navigator.appName == 'Netscape')
            document.layers.about_menu5.visibility="visible";
         else
            document.all.about_menu5.style.visibility="visible";
         break;

     case "about1":
          if(document.getElementById) //IE 5 and NS 6
			document.getElementById("about_menu1").style.visibility = "visible";		 
		 else if (navigator.appName == 'Netscape')
            document.layers.about_menu1.visibility="visible";
         else
            document.all.about_menu1.style.visibility="visible";                  
         break;
         
     case "about2":
          if(document.getElementById) //IE 5 and NS 6
			document.getElementById("about_menu2").style.visibility = "visible";		 
		 else if (navigator.appName == 'Netscape')
            document.layers.about_menu2.visibility="visible";
         else
            document.all.about_menu2.style.visibility="visible";
         break;
         
     case "about3":
          if(document.getElementById) //IE 5 and NS 6
			document.getElementById("about_menu3").style.visibility = "visible";		 
		 else if (navigator.appName == 'Netscape')
            document.layers.about_menu3.visibility="visible";
         else
            document.all.about_menu3.style.visibility="visible";
         break;
         
     case "about4":
          if(document.getElementById) //IE 5 and NS 6
			document.getElementById("about_menu4").style.visibility = "visible";		 
		 else if (navigator.appName == 'Netscape')
            document.layers.about_menu4.visibility="visible";
         else
            document.all.about_menu4.style.visibility="visible";
         break;
             
     default:
          if(document.getElementById) //IE 5 and NS 6
			document.getElementById("about_menu0").style.visibility = "visible";		 
		 else if (navigator.appName == 'Netscape')
            document.layers.about_menu0.visibility="visible";
         else
            document.all.about_menu0.style.visibility="visible";
         break;
    } 
}


function hide_menu(menuCurrent, menuTop)
{
   switch (menuCurrent) 
   {
     case "about0":
          if(document.getElementById) //IE 5 and NS 6
			document.getElementById("about_menu0").style.visibility = "hidden";		 
		 else if (navigator.appName == 'Netscape')
            document.layers.about_menu0.visibility="hidden";
         else
            document.all.about_menu0.style.visibility="hidden";
         break;
		 
     case "about5":
          if(document.getElementById) //IE 5 and NS 6
			document.getElementById("about_menu5").style.visibility = "hidden";		 
		 else if (navigator.appName == 'Netscape')
            document.layers.about_menu5.visibility="hidden";
         else
            document.all.about_menu5.style.visibility="hidden";
         break;

     case "about1":
          if(document.getElementById) //IE 5 and NS 6
			document.getElementById("about_menu1").style.visibility = "hidden";		 
		 else if (navigator.appName == 'Netscape')
            document.layers.about_menu1.visibility="hidden";
         else
            document.all.about_menu1.style.visibility="hidden";
         break;
         
     case "about2":
          if(document.getElementById) //IE 5 and NS 6
			document.getElementById("about_menu2").style.visibility = "hidden";		 
		 else if (navigator.appName == 'Netscape')
            document.layers.about_menu2.visibility="hidden";
         else
            document.all.about_menu2.style.visibility="hidden";
         break;
         
     case "about3":
          if(document.getElementById) //IE 5 and NS 6
			document.getElementById("about_menu3").style.visibility = "hidden";		 
		 else if (navigator.appName == 'Netscape')
            document.layers.about_menu3.visibility="hidden";
         else
            document.all.about_menu3.style.visibility="hidden";
         break;
         
     case "about4":
          if(document.getElementById) //IE 5 and NS 6
			document.getElementById("about_menu4").style.visibility = "hidden";		 
		 else if (navigator.appName == 'Netscape')
            document.layers.about_menu4.visibility="hidden";
         else
            document.all.about_menu4.style.visibility="hidden";
         break;

     default:
          if(document.getElementById) //IE 5 and NS 6
			document.getElementById("about_menu0").style.visibility = "hidden";		 
		 else if (navigator.appName == 'Netscape')
            document.layers.about_menu0.visibility="hidden";
         else
            document.all.about_menu0.style.visibility="hidden"; 
         break;
    }
}

// -->