var directionsWnd='';
function GetDirections(addressid,cityid,stateid,zipid)
{
	var address=document.getElementById(addressid);
	if(address)	 address=address.value;

	var city=document.getElementById(cityid);
	if(city)	 city=city.value;
	
	var state=document.getElementById(stateid);
	if(state)	 state=state.value;
	
	var zip=document.getElementById(zipid);
	if(zip)	 zip=zip.value;		


	var url="http://maps.google.com/maps?daddr=201+S+Canyon+St,+West+Yellowstone,+MT+59758+(Grizzly+and+Wolf+Discovery+Center)&geocode=7701878415415686154,44.656935,-111.099665&dirflg=&saddr="+address+" "+city+" "+state+" "+zip+"&f=d&hl=en&dq=Grizzly+Wolf+Discovery+Center&sll=44.719417,-110.137939&sspn=2.490256,5.141602&cid=44656935,-111099665,184563233177907385&ie=UTF8&om=1";  

	if(!city)		alert('Please enter your city');
	else if(!state)	alert('Please enter your state');
	else		
	{
	  	directionsWnd=window.open(url,'directionsWnd','width=700,height=500,menubar=no,scrollbars=yes,resizable=yes');
	  	if(directionsWnd)	directionsWnd.focus();
	}
}