function change_button() {
	var the_box = window.document.terms;
	var buttonIE = document.getElementById("submit");
		if (the_box == false) {
			buttonIE.disabled = true;
		} else {
			buttonIE.disabled = false;
		}
	}

function MM_findObj(n, d) {
	var p, i, x;
		if (!d) {
			d = document;
		}
		if ((p = n.indexOf("?")) > 0 && parent.frames.length) {
			d = parent.frames[n.substring(p + 1)].document;
			n = n.substring(0, p);
		}
		if (!(x = d[n]) && d.all) {
			x = d.all[n];
		}
		for (i = 0; !x && i < d.forms.length; i++) {
			x = d.forms[i][n];
		}
		for (i = 0; !x && d.layers && i < d.layers.length; i++) {
			x = MM_findObj(n, d.layers[i].document);
		}
		if (!x && d.getElementById) {
			x=d.getElementById(n);
		}
	return x;
}
			
function MM_validateForm() {
	var i, p, q, nm, test, num, min, max, errors = '', args = MM_validateForm.arguments;
		for (i = 0; i < (args.length - 2); i += 3) {
			test = args[i + 2];
			val = MM_findObj(args[i]);
			if (val) {
				nm = val.name;
			if ((val = val.value) != "") {
				if (test.indexOf('isEmail') != -1) {
					p = val.indexOf('@');
					if (p < 1 || p == (val.length - 1)) {
						errors += '- ' + nm + ' must contain an e-mail address.\n';
						}
				} else if (test != 'R') {
					num = parseFloat(val);
					if (isNaN(val)) {
					errors += '- ' + nm + ' must contain a number.\n';
				}
				if (test.indexOf('inRange') != -1) {
					p = test.indexOf(':');
					min = test.substring(8, p);
					max = test.substring(p + 1);
						if (num < min || max < num) {
							errors += '- ' + nm + ' must contain a number between ' + min + ' and ' + max + '.\n';
							}
					}
					}
				} else if (test.charAt(0) == 'R') {
					errors += '- ' + nm + ' is required.\n';
				}
			}
		}
		if (errors) {
			alert('The following error(s) occurred:\n' + errors);
		}
			document.MM_returnValue = (errors == '');
}