Tabellen-/ Listenwert in Sharepoint auslesen

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<script language="javascript" type="text/javascript">
function timedRefresh(timeoutPeriod) {
setTimeout("window.location.href = window.location.href;",timeoutPeriod);

}
timedRefresh(600000);// for 10 minutes

var i=0;
var allCells = document.getElementsByTagName("td");
for(i=0;i<allCells.length; i++)
{if(allCells[i].innerText.indexOf("Cryoampel#") == 0)
{if(allCells[i-1].innerText == "Eingekühlt")
{
var sharepointtime = Math.abs(Date.parse("January 01  1900 00:00:00"))/1000/60/60;
var modtime = (allCells[i].innerText.split("#")[1]);
//Stunden seit 1900
modtime = modtime.replace(/,/g, '.')*24;
//modtime in Stunden seit 1970
var modtime_js =  modtime-sharepointtime;
//currtime in Stunden seit 1970
var currtime = new Date();

//Korrektur für Sommerzeit
var jan = new Date(currtime.getFullYear(), 0, 1).getTimezoneOffset();
var jul = new Date(currtime.getFullYear(), 6, 1).getTimezoneOffset();
if(Math.max(jan, jul) != currtime.getTimezoneOffset())
{
currtime = (currtime.getTime()/1000/60/60)+1;
}
else
currtime = currtime.getTime()/1000/60/60;

var remtime = ((modtime_js + 4) - currtime)-48;
var sremtime = remtime.toString();
var remtimesplit = sremtime.split(".");
var remminutes = Math.abs(parseInt((remtime-parseInt(remtimesplit[0]))*60));
if (remminutes <10) {remminutes = "0"+remminutes};
if(remtime <= 0.5)
{
allCells[i].innerHTML = "<b><font color='red'>"+remtimesplit[0]+":"+remminutes+"</font></b>";
}
else
allCells[i].innerHTML = remtimesplit[0]+":"+remminutes;
}
else
allCells[i].innerHTML = "-";
}
}</script>