function popwin(url)
        {
          window.open(url,"my_new_window","toolbar=no, location=no, directories=no, status=no, menubar=no, scrollbars=yes, resizable=no, copyhistory=yes, width=500, height=400")
        }

      function appwin(url)
        {
          window.open(url,"my_new_window","toolbar=no, location=no, directories=no, status=no, menubar=no, scrollbars=yes, resizable=yes, copyhistory=yes, width=880, height=600")
        }
		
	  function menupop(url)
        {
          window.open(url)
        }
		function popwin_sm(url)
        {
          window.open(url,"my_new_window","toolbar=no, location=no, directories=no, status=no, menubar=no, scrollbars=no, resizable=no, copyhistory=yes, width=320, height=210, left=100, top=100")
        }


var usingWin = (navigator.appVersion.indexOf("Windows") != -1);
var usingMac = (navigator.appVersion.indexOf("Mac") != -1);
var usingLinux = (navigator.userAgent.indexOf("Linux") != -1);

var usingNS = (navigator.appName == "Netscape");
var usingNS_4 = ((navigator.appName == "Netscape") && (navigator.userAgent.indexOf("Gecko") == -1));
var usingNS_6 = ((navigator.appName == "Netscape") && (navigator.userAgent.indexOf("Netscape6") != -1));
var usingNS_7 = ((navigator.appName == "Netscape") && (navigator.userAgent.indexOf("Netscape/7") != -1));

var usingIE = ((navigator.userAgent.indexOf("MSIE") != -1) && (navigator.userAgent.indexOf("Opera") == -1));
var usingIE_4_5 = (navigator.appVersion.indexOf("MSIE 4.5")>-1);;
var usingIE_5 = ((navigator.userAgent.indexOf("MSIE 5.") != -1) && (navigator.userAgent.indexOf("Opera") == -1));
var usingIE_6 = ((navigator.userAgent.indexOf("MSIE 6.") != -1) && (navigator.userAgent.indexOf("Opera") == -1));

var usingOpera = (navigator.userAgent.indexOf("Opera") != -1);
var usingOpera_5 = (navigator.userAgent.indexOf("Opera 5.") != -1);
var usingOpera_6 = ((navigator.userAgent.indexOf("Opera 6.") != -1) && (navigator.userAgent.indexOf("Windows") != -1));

var usingMozilla = ((navigator.appName == "Netscape") && (navigator.userAgent.indexOf("Gecko") != -1) && (navigator.userAgent.indexOf("Netscape") == -1));

var usingSafari = (navigator.userAgent.indexOf("Safari") != -1);