function kaitori_menu(num) {

	if (num == 1 ){
		document.getElementById('kaitori_menu_bloc').style.backgroundImage = "url(../user_data/packages/default/img/common/kaitori_menu_bg_audio.png)";
        document.getElementById('kaitori_menu_audio').style.display = "block";
        document.getElementById('kaitori_menu_field').style.display = "none";
        document.getElementById('kaitori_menu_movie').style.display = "none";
        document.getElementById('kaitori_menu_sound').style.display = "none";
        document.getElementById('kaitori_menu_dtm').style.display = "none";
	    }
	else if ( num == 2 ){
		document.getElementById('kaitori_menu_bloc').style.backgroundImage = "url(../user_data/packages/default/img/common/kaitori_menu_bg_field.png)";
        document.getElementById('kaitori_menu_audio').style.display = "none";
        document.getElementById('kaitori_menu_field').style.display = "block";
        document.getElementById('kaitori_menu_movie').style.display = "none";
        document.getElementById('kaitori_menu_sound').style.display = "none";
        document.getElementById('kaitori_menu_dtm').style.display = "none";
	}
	else if ( num == 3 ){
		document.getElementById('kaitori_menu_bloc').style.backgroundImage = "url(../user_data/packages/default/img/common/kaitori_menu_bg_movie.png)";
        document.getElementById('kaitori_menu_audio').style.display = "none";
        document.getElementById('kaitori_menu_field').style.display = "none";
        document.getElementById('kaitori_menu_movie').style.display = "block";
        document.getElementById('kaitori_menu_sound').style.display = "none";
        document.getElementById('kaitori_menu_dtm').style.display = "none";
	}
	else if ( num == 4 ){
		document.getElementById('kaitori_menu_bloc').style.backgroundImage = "url(../user_data/packages/default/img/common/kaitori_menu_bg_sound.png)";
        document.getElementById('kaitori_menu_audio').style.display = "none";
        document.getElementById('kaitori_menu_field').style.display = "none";
        document.getElementById('kaitori_menu_movie').style.display = "none";
        document.getElementById('kaitori_menu_sound').style.display = "block";
        document.getElementById('kaitori_menu_dtm').style.display = "none";
	}
	else if ( num == 5 ){
		document.getElementById('kaitori_menu_bloc').style.backgroundImage = "url(../user_data/packages/default/img/common/kaitori_menu_bg_dtm.png)";
        document.getElementById('kaitori_menu_audio').style.display = "none";
        document.getElementById('kaitori_menu_field').style.display = "none";
        document.getElementById('kaitori_menu_movie').style.display = "none";
        document.getElementById('kaitori_menu_sound').style.display = "none";
        document.getElementById('kaitori_menu_dtm').style.display = "block";
	}
}

function onFocus(obj){
	if(obj.value == obj.defaultValue){
	    obj.value = "";
	    obj.style.color='#666666';
	}
}
function onBlur(obj){
	if(obj.value == obj.defaultValue || obj.value == ""){
	    obj.value = obj.defaultValue;
	    obj.style.color='#999999';
	}
}