function onEnter(evt) {
	var keyCode = null;
	
	if ( evt.which ) 		keyCode = evt.which;
	else if( evt.keyCode ) 	keyCode = evt.keyCode;

	if( 13 == keyCode ) 	return true;
	else					return false;
}

// Clears text fields in forms on click if the value is still the default value
function clearTextarea(textarea) {
    if (textarea.defaultValue==textarea.value)
	    textarea.value = "";
}

function urlencode( str ) {
    // http://kevin.vanzonneveld.net
    // +   original by: Philip Peterson
    // +   improved by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
    // *     example 1: urlencode('Kevin van Zonneveld!');
    // *     returns 1: 'Kevin+van+Zonneveld%21'
                                     
    var ret = str;
    
    ret = ret.toString();
    ret = encodeURIComponent(ret);
    ret = ret.replace(/%20/g, '+');
 
    return ret;
}

function radiovalue(group) {
	var value = '';
	for (i = 0; i < group.length; i++){
		if(group[i].checked){
			value = group[i].value;
			break;
		}
	}
	return value;
}