/* Set a maximium length on a given object.
 * Example: <textarea name="myName" onkeypress="return imposeMaxLength(this, 15);" ><textarea>
 */
function imposeMaxLength(obj, maxLength) {
	return (obj.value.length <= maxLength);
}

function getCookie(cname) {
	if (document.cookie.length > 0) {
		var begin = document.cookie.indexOf(cname+"="); 
		if (begin != -1) {
			begin += cname.length+1; 
			var end = document.cookie.indexOf(";", begin);
			if (end == -1) end = document.cookie.length;
			return unescape(document.cookie.substring(begin, end)); 
		} 
	}
	return null; 
}

function setCookie(cname, value, expiredays) {
	var expireDate = new Date ();
	expireDate.setTime(expireDate.getTime() + (expiredays * 24 * 3600 * 1000));
	document.cookie = cname + "=" + escape(value)
		+ ((expiredays == null) ? "" : "; expires=" + expireDate.toGMTString());
}