function Go(x) {
 if(x == "nothing") {
   document.forms[0].reset();
   document.forms[0].elements[0].blur();
   return;
 }
 else if(x == "end")
   location.href = '';
 else {
   location.href = x;
   document.forms[0].reset();
   document.forms[0].elements[0].blur();
 }
}

userAgent = navigator.userAgent.toLowerCase();

//dom = (document.documentElement && userAgent.indexOf("opera") < 0 );
ope = (userAgent.indexOf("opera") > -1);
//mi4 = (document.all && userAgent.indexOf("msie") > -1 && userAgent.indexOf("4.") > -1 && userAgent.indexOf("opera") < 0 && userAgent.indexOf("6.") < 0);
//ns4 = (userAgent.indexOf("4.") > -1 && userAgent.indexOf("icab") < 0 && (userAgent.indexOf(" i") > -1 || userAgent.indexOf(" u") > -1));
saf = (userAgent.indexOf("safari") > -1);
//iewin6 = (userAgent.indexOf("msie") > -1 && userAgent.indexOf("6.") > -1 && userAgent.indexOf("power") < 0);
iewin = (userAgent.indexOf("msie") > -1 && userAgent.indexOf("5.") > -1 && userAgent.indexOf("power") < 0);
iewin7 = (userAgent.indexOf("msie") > -1 && (userAgent.indexOf("7.") > -1 || userAgent.indexOf("8.") > -1 ));
//iewin5 = (userAgent.indexOf("msie") > -1 && userAgent.indexOf("5.") > -1 && userAgent.indexOf("6.") < 0 && userAgent.indexOf("power") < 0);
iemac5 = (userAgent.indexOf("msie") > -1 && userAgent.indexOf("5.") > -1 && userAgent.indexOf("power") > -1);
moz = (navigator.appCodeName == "Mozilla" && navigator.appName != "Microsoft Internet Explorer");

if (iemac5 || saf || moz) { document.write('<link rel="stylesheet" href="css/mac.css" type="text/css" />'); }
if (iewin) { document.write('<link rel="stylesheet" href="css/iewin.css" type="text/css" />'); }
if (iewin7) { document.write('<link rel="stylesheet" href="css/ie7.css" type="text/css" />'); }
if (saf) { document.write('<link rel="stylesheet" href="css/saf.css" type="text/css" />'); }
if (ope) { document.write('<link rel="stylesheet" href="css/ope.css" type="text/css" />'); }
//alert(navigator.appName);