function isblank(s) {
	for(var i = 0; i < s.length; i++) {
		var c = s.charAt(i);
		if ((c != ' ') && (c != '\n') && (c != '\t')) {
			return false;
		}
	}
	return true;
}

function selectOther() {
	if(!isblank(document.data.amountOther.value)) {
		var otheramount = document.getElementById("otheramount");

		if (document.data.amountOther.value > 100) {
			alert("Please enter a value between 1 and 100.");
			document.data.amountOther.value = 0;
		}

		otheramount.checked=true;

		Pledge_Low = document.getElementById("pledge_low");
		Pledge_High = document.getElementById("pledge_high");

		Pledge_Low.innerHTML = document.data.amountOther.value / 100 * 300;
		Pledge_High.innerHTML = document.data.amountOther.value / 100 * 600;

		document.getElementById("INTEGER0").value = document.data.amountOther.value;

	}
}

function setpledge() {
	var tmp = 0;

	for (i = 0; i < document.data.amount.length; i++) {
		if (document.data.amount[i].checked == true) {
			tmp = document.data.amount[i].value;
			break;
		}
	}

	Pledge_Low = document.getElementById("pledge_low");
	Pledge_High = document.getElementById("pledge_high");

	Pledge_Low.innerHTML = tmp / 100 * 300;
	Pledge_High.innerHTML = tmp / 100 * 600;

	document.getElementById("INTEGER0").value = tmp;
}