/**
* Guestbook
*
* @author	md
*/
var Guestbook = {
	/**
	* check before submit
	*
	* @param	Event	evt
	* @return	void
	*/
	submitCheck : function(evt){
		var idx, elem;
		var fieldNames = ['GF-name','GF-email','GF-subject','GF-body','GF-captcha'];
		var errorsCnt=0;
		for( idx in fieldNames ){
			elem = document.getElementById(fieldNames[idx]);
			if( elem.value=='' ){
				elem.style.border='1px solid red';
				errorsCnt++;
			};
		};
		if( errorsCnt>0 ){
			return false;
		};
		return true;
	}
}