var isOpera=(navigator.userAgent.indexOf("Opera")!=-1)?true:false;
var isOpera5=(navigator.appVersion.indexOf("MSIE 5")!=-1 && navigator.userAgent.indexOf("Opera 5")!=-1)?true:false;
var isOpera6=(navigator.appVersion.indexOf("MSIE 5")!=-1 && navigator.userAgent.indexOf("Opera 6")!=-1)?true:false;
var isN6=(navigator.userAgent.indexOf("Gecko")!=-1);
var isN4=(document.layers)?true:false;
var isMac=(navigator.userAgent.indexOf("Mac")!=-1);
var isIE=(document.all && !isOpera && (!isMac || navigator.appVersion.indexOf("MSIE 4")==-1))?true:false;

var calWin=null;
var hasCal=false;
function showPopUp(URL) {


    if (calWin != null && !calWin.closed) {
      calWin.moveTo(100,100);
    }else {
      if (isIE || isOpera6) {
        calWin=window.open(URL,"cal","toolbar=0,width="+300+",height="+300+",left="+(100)+",top="+(100));
      }
      else {
        calWin=window.open(URL,"cal","toolbar=0,width="+300+",height="+300+",screenx="+(100)+",screeny="+(100));
      }
    }

//    calWin.document.open();
//      calWin.document.location(URL);
calWin.location.replace( URL );
//    calWin.document.write("<META HTTP-EQUIV=refresh CONTENT=\"0; URL=\""+URL+">");
//    calWin.document.close();

    calWin.focus();
  }