function openwin(url,w,h,scrollyes)
{
	var top = (screen.height-h)/2;
	var left = (screen.width-w)/2;
	var customize = "toolbar=no,menubar=no,resizable=no,scrollbars="+scrollyes+",width="+w+",height="+h+",top="+top+",left="+left;
	window.open(url,'_blank',customize)
}

function trimString (str) {
  str = this != window? this : str;
  return str.replace(/^\s+/g, '').replace(/\s+$/g, '');
}

function getURLParam(strParamName){
  var strReturn = "";
  var strHref = window.location.href;
  if ( strHref.indexOf("&") > -1 ){
    var strQueryString = strHref.substr(strHref.indexOf("&")).toLowerCase();
    var aQueryString = strQueryString.split("&");
    for ( var iParam = 0; iParam < aQueryString.length; iParam++ ){
      if ( 
aQueryString[iParam].indexOf(strParamName + "=") > -1 ){
        var aParam = aQueryString[iParam].split("=");
        strReturn = aParam[1];
        break;
      }
    }
  }
  return strReturn;
}