Event.observe( window, 'load', function(){
		var is_OPERA = ( navigator.userAgent.indexOf('Opera') != -1 ) ? true : false;
		var is_IE6 = ( navigator.userAgent.indexOf('MSIE 6') != -1 ) ? true : false;
	});

var last = false;
function zoomImg(p_id,id)
{
	var img_c = $('zoom_c');
	var tmp = '<div id="z_'+id+'" class="zoom_img"><span class="img_close" onclick="closeImg('+id+')"><img src="images/web/image-close.gif" alt="Close" title="Close"></span><img src="photos/photo_'+p_id+'_'+id+'_large.jpg" id="p_'+id+'" style="display:none;" onload="imgL('+id+')"></div>';

	if( last )
	{
		var last_img = $('z_'+last);
		if( last == id )
			last_img.show();
		else
		{
			last_img.remove();
			img_c.innerHTML += tmp;
		}
	}
	else
		img_c.innerHTML += tmp;

	img_c.show();
}

function closeImg(id)
{
	$('z_'+id).hide();
	$('zoom_c').hide();
	last = id;
}

function imgL(id)
{
	var browser_width = document.documentElement.clientWidth || document.body.clientWidth || window.innerWidth || 0;
		browser_width = parseInt( browser_width );
	var browser_height = document.documentElement.clientHeight || document.body.clientHeight || window.innerHeight || 0;
		browser_height = parseInt( browser_height );
	var img = $('p_'+id);
	var img_div = $('z_'+id);
	var w = parseInt( img.getWidth() );
	var h = parseInt( img.getHeight() );
	var left = Math.ceil( (browser_width-w) / 2 );
	var top = Math.ceil( (browser_height-h) /2 );
	img_div.setStyle( {"top" : top+"px", "left" : left+"px", width : w+"px", height : h+"px"} );

	img.show();
}