// JScript File
var spanSymbols;
var txtInput;
var amount=0;
var prevLength=-1;
function InitTxtUtil(spanID, txtInputID, _amount)
{
    spanSymbols=document.getElementById(spanID);
    txtInput=document.getElementById(txtInputID);
    amount=_amount;
    setInterval("ShowStatistic();", 250);
}
function ShowStatistic()
{
	var symbols=txtInput.value.length;
	if(prevLength==symbols)return;
	prevLength=symbols;
	if(amount>0)
	    spanSymbols.innerHTML=amount-symbols;
	else
	    spanSymbols.innerHTML=symbols;
};