Round number to nearest <n> (5, 10, 50, etc.)

round-to.js

// Round value to nearest <n>
// multiplier allows values to be multiplied and stay rounded to nearest <n>
// (i.e. 1732 * 2 => nearest 50)
function RoundTo ( value, to, multiplier ) {
	multiplier = multiplier || 1;
	return Math.round( ( parseInt( value ) * multiplier ) / to ) * to;
}