Javascript

function formatCurrency(num) {
num = num.toString().replace(/\$|\,/g,'');
if(isNaN(num))
num = "0";
sign = (num == (num = Math.abs(num)));
num = Math.floor(num*100+0.50000000001);
cents = num%100;
num = Math.floor(num/100).toString();
if(cents<10)
cents = "0" + cents;
for (var i = 0; i < Math.floor((num.length-(1+i))/3); i++)
num = num.substring(0,num.length-(4*i+3))+','+
num.substring(num.length-(4*i+3));
return (((sign)?'':'-') + num + '.' + cents);
}



function formatNoNorwegian(price)
{
var dot=".";
var comma=/,/g;
var dol=/§/g;
var spe=/¶/g;
price =price.replace(/[,]/g,"§");
price =price.replace(/[.]/g,"¶");
price =price.replace(/[¶]/g,",");
price =price.replace(/[§]/g,".");
return price;
}

function roundToHalf(value) {
var converted = parseFloat(value); // Make sure we have a number
var decimal = (converted - parseInt(converted, 10));
decimal = Math.round(decimal * 10);
if (decimal == 5) { return (parseInt(converted, 10)+0.5); }
if ( (decimal < 3) || (decimal > 7) ) {
return Math.round(converted);
} else {
return (parseInt(converted, 10)+0.5);
}
}