/*Browser initialization*/
var isOpera=self.opera
var ie=document.all&&document.getElementById&&!isOpera
var ns6=document.getElementById&&!document.all

function showHidden(elem){
	switch(elem.selectedIndex){
		case 0: setDefault();
		break;
		case 1: showGuestTr();
		break;		
	}
}


function showGuestTr(){
	if(ns6 || isOpera){
	document.getElementById('guestTr1').style.display = 'table-row';
	document.getElementById('guestTr2').style.display = 'table-row';
	document.getElementById('guestTr3').style.display = 'table-row';
	}
	
	if(ie){
	document.getElementById('guestTr1').style.display = 'inline';		
	document.getElementById('guestTr2').style.display = 'inline';
	document.getElementById('guestTr3').style.display = 'inline';				
	}	
}

function setDefault(){

	document.getElementById('guestTr1').style.display = 'none';
	document.getElementById('guestTr2').style.display = 'none';
	document.getElementById('guestTr3').style.display = 'none';
	document.getElementById('gN').value = '';
	document.getElementById('gSN').value = '';
	document.getElementById('gFN').value = '';
}

function check(){
    if(document.getElementById('guestNum')){
        showHidden(document.getElementById('guestNum'));
    }
	
}

window.onload = check;