var curpopup='';

function open_popup(url)
{
	curpopup=window.open(url,'popup','height=550,width=450,menu=no,scrollbars=no,resizable=yes');
	curpopup.focus();
}

var curtab='maptab';
function showTab(id)
{
	var tab=document.getElementById(id);
	var oldtab=document.getElementById(curtab);
	
	if(tab && oldtab)
	{
		oldtab.className='tab_content';
		tab.className='tab_content_shown';
	}	
	
	curtab=id;
}

var ss_curimage=0;
var ss_images=new Array();
var ss_captions=new Array();
var ss_timer=0;
var ss_timeout=2500;

function ssPrevImage()
{
	ssShowImage(ss_curimage-1);
}

function ssNextImage()
{
	ssShowImage(ss_curimage+1);  
}

function ssShowImage(idx)
{
	if(idx<0)  
		idx=ss_images.length-1;
	if(idx>=ss_images.length)  
		idx=0;
	ss_curimage=idx;	
	
	var ss_image_obj=document.getElementById('slideshow_image');
	var ss_caption_obj=document.getElementById('slideshow_caption');
	
	if(ss_image_obj)	
		ss_image_obj.src=ss_images[ss_curimage];
	if(ss_caption_obj)	
		ss_caption_obj.innerHTML=ss_captions[ss_curimage];
}

function ssPlay(play)
{
	if(play && !ss_timer)  
	{
		ssNextImage();
		ss_timer=window.setInterval(ssNextImage,ss_timeout);
	}
	else if(!play)
	{
		window.clearInterval(ss_timer);
		ss_timer=0;
	}
}