var overlay;
var overlay_height=0;
var overlay_opacity = 0;
var overlay_content_opacity = 100;

function show_overlay(lng) {
		document.getElementById("overlay").style.display = "block";
		document.getElementById("overlay_content").style.display = "block";
		document.getElementById("overlay_content_container").style.display = "block";
		

		if(lng == 'intro') {
				newInnerHTML = '<div id="overlay_close"><a href="#" onclick="close_overlay(); return false;">Close</a></div>' +
				'<div id="overlay_text" style="height: 530px;width: ' + popupwidth + 'px;" align="center">' +
				lang[lng] +
				'</div>';
				document.getElementById("overlay_content").style.width = popupwidth + "px";
				document.getElementById("overlay_content").style.marginLeft = "-" + (popupwidth / 2) + "px";
		}
		else {
				newInnerHTML = '<div id="overlay_close"><a href="#" onclick="close_overlay(); return false;">Close</a></div>' +
				'<div id="overlay_text">' +
				'<div class="content_overlay">' +
				'<div class="main_title"><img src="images/subline_fkk_mainhattan.png" alt="" border="0"></div>' +
				'<div class="main_line"></div>' +
				'<div class="text_content">' +
				lang[lng] +
				'</div></div></div></div>';
				document.getElementById("overlay_content").style.width = "755px";
				document.getElementById("overlay_content").style.marginLeft = "-375px";
		}

		document.getElementById("overlay_content").innerHTML = newInnerHTML;
	
		overlay=setTimeout("open_overlay()",20);

		return false;
}

function open_overlay()
{
		var weiter=false;
		if (overlay_opacity < 85)
		{
				overlay_opacity += 5;
				document.getElementById("overlay").style.opacity = overlay_opacity / 100;
				document.getElementById("overlay").style.filter = "alpha(opacity=" + overlay_opacity + ")";
				weiter=true;
		}

		if (overlay_height < 500)
		{
				overlay_height += 25;
				document.getElementById("overlay_content").style.height = overlay_height + "px";
				weiter=true;
		}
	
		//alert ("Opacity:" + overlay_opacity + "\nContent:"  + "\nHeight" + overlay_height);
		if (weiter)
				overlay=setTimeout("open_overlay()",20);
}


function close_overlay() {
		var weiter=false;
		if (overlay_opacity > 0)
		{
				overlay_opacity -= 5;
				document.getElementById("overlay").style.opacity = overlay_opacity / 100;
				document.getElementById("overlay").style.filter = "alpha(opacity=" + overlay_opacity + ")";
				weiter=true;
		}

		if (overlay_height > 0)
		{
				overlay_height -= 25;
				document.getElementById("overlay_content").style.height = overlay_height + "px";
				weiter=true;
		}
	
		if (weiter)
				overlay=setTimeout("close_overlay()",20);
		else
		{
				document.getElementById("overlay").style.display = "none";
				document.getElementById("overlay_content").style.display = "none";
				document.getElementById("overlay_content_container").style.display = "none";
		}
}