function SelectServices(){
     if (document.services.listservices.options[document.services.listservices.selectedIndex].value != "none"){ 
             url = document.services.listservices.options[document.services.listservices.selectedIndex].value
             location =url
       }        
}


function SelectAbout(){
     if (document.about.listabout.options[document.about.listabout.selectedIndex].value != "none"){ 
             url = document.about.listabout.options[document.about.listabout.selectedIndex].value
             location =url
       }        
}

function SelectResearch(){
     if (document.research.listresearch.options[document.research.listresearch.selectedIndex].value != "none"){ 
             url = document.research.listresearch.options[document.research.listresearch.selectedIndex].value
             location =url
       }        
}

function SelectResources(){
     if (document.resources.listresources.options[document.resources.listresources.selectedIndex].value != "none"){ 
             url = document.resources.listresources.options[document.resources.listresources.selectedIndex].value
             location =url
       }        
}


function swap_selected(elem){
   if(elem){
      //return if you clicked the selected tab
      if(elem.className == "selected") return;

      var tab_1 = document.getElementById("T1");
      var tab_2 = document.getElementById("T2");
      var tab_3 = document.getElementById("T3");
      var tab_4 = document.getElementById("T4");

      var content_1 = document.getElementById("C1");
      var content_2 = document.getElementById("C2");
      var content_3 = document.getElementById("C3");
      var content_4 = document.getElementById("C4");

      if(elem == tab_1){
         tab_1.className = "selected";
         content_1.style.display = "block";

         tab_2.className = "";
         content_2.style.display = "none";

         tab_3.className = "";
         content_3.style.display = "none";

         tab_4.className = "";
         content_4.style.display = "none";
      }
      else if(elem == tab_2){
         tab_2.className = "selected";
         content_2.style.display = "block";

         tab_1.className = "";
         content_1.style.display = "none";

         tab_3.className = "";
         content_3.style.display = "none";

         tab_4.className = "";
         content_4.style.display = "none";
      }
      else if(elem == tab_3){
         tab_3.className = "selected";
         content_3.style.display = "block";

         tab_2.className = "";
         content_2.style.display = "none";

         tab_1.className = "";
         content_1.style.display = "none";

         tab_4.className = "";
         content_4.style.display = "none";
      }
      else if(elem == tab_4){
         tab_4.className = "selected";
         content_4.style.display = "block";

         tab_2.className = "";
         content_2.style.display = "none";

         tab_3.className = "";
         content_3.style.display = "none";

         tab_1.className = "";
         content_1.style.display = "none";
      }
   }
}