var mPLNFirstDate = new Date(2000,01,01).getTime()/1000;
var mPLNFirstValue = 261040.53147;
var mPLNLastDate = new Date(2007,12,31).getTime()/1000;
var mPLNLastValue = 561659.955;
var mPLNRate = (mPLNLastValue - mPLNFirstValue) / (mPLNLastDate - mPLNFirstDate);


function mPLNUpdateElement(el) {

    var now = new Date();
    var curVal = mPLNLastValue + (now.getTime()/1000 - mPLNLastDate) * mPLNRate; 
    var val = (mPLNFirstValue / curVal);
    el.innerHTML =  val.toFixed(11);
}



function mPLNUpdate() {
    
    var el = document.getElementById("mpln");
    if(el) {
	mPLNUpdateElement(el);
    }
}


mPLNUpdate();

setInterval("mPLNUpdate()",250);