var isIE = false;
var isOpera = false;
var isNetscape = false;
var isGecko = false;

if (navigator.userAgent.indexOf("Opera") >= 0) isOpera = true;
else if (navigator.userAgent.indexOf("Gecko") >= 0) isGecko = true;
else if (navigator.userAgent.indexOf("Netscape") >= 0) isNetscape = true;
else isIE = true;

function myPopup(url) {
  var popup=window.open(url,"popitup","toolbar=no,scrollbars=yes,resizable=yes,location=no,menubar=0,width=700,height=400");
}
function myPopup1(url) {
  var popup=window.open(url,"popitup","toolbar=yes,scrollbars=yes,resizable=yes,location=yes,menubar=0,width=750,height=430");
}
function myPopup2(url) {
  var popup=window.open(isOpera ? unescape(url) : url,"","");
}
function myPopupHigh(url) {
  var popup=window.open(url,"popitup","toolbar=no,scrollbars=yes,resizable=yes,location=no,menubar=0,width=750,height=500");
}