function getQuerystring(key, default_)
            {
              if (default_==null) default_=""; 
              key = key.replace(/[\[]/,"\\\[").replace(/[\]]/,"\\\]");
              var regex = new RegExp("[\\?&]"+key+"=([^&#]*)");
              var qs = regex.exec(window.location.href);
              if(qs == null)
                return default_;
              else
                return qs[1];
            }
        function PAll() {

            var P1 = document.getElementById('Panel1');
            var P2 = document.getElementById('Panel2');
            var P3 = document.getElementById('Panel3');

            var Par1 = getQuerystring('P1');
            var Par2 = getQuerystring('P2');
            var Par3 = getQuerystring('P3');
			var URL = location.pathname

			if ((Par1 == "") & (Par2 == "") & (Par3 == "")) {
 
                P1.style.display = "";
                P2.style.display = "none";
                P3.style.display = "none";
            }
          else {
                P1.style.display = Par1;
                P2.style.display = Par2;
                P3.style.display = Par3;
           }
        }
        function P1() {
            var P1 = document.getElementById('Panel1');
            var P2 = document.getElementById('Panel2');
            var P3 = document.getElementById('Panel3');        
            P1.style.display = "";
            P2.style.display = "none";
            P3.style.display = "none";
        }
        function P2() {
            var P1 = document.getElementById('Panel1');
            var P2 = document.getElementById('Panel2');
            var P3 = document.getElementById('Panel3');
            P1.style.display = "none";
            P2.style.display = "";
            P3.style.display = "none";
        }
        function P3() {
            var P1 = document.getElementById('Panel1');
            var P2 = document.getElementById('Panel2');
            var P3 = document.getElementById('Panel3');
            P1.style.display = "none";
            P2.style.display = "none";
            P3.style.display = "";
        }
        function ExpAll() {
            var P1 = document.getElementById('Panel1');
            var P2 = document.getElementById('Panel2');
            var P3 = document.getElementById('Panel3');
            P1.style.display = "";
            P2.style.display = "";
            P3.style.display = "";
        }
        function ColAll() {
            var P1 = document.getElementById('Panel1');
            var P2 = document.getElementById('Panel2');
            var P3 = document.getElementById('Panel3');
            P1.style.display = "none";
            P2.style.display = "none";
            P3.style.display = "none";
        }