function openScreencast(url, w, h){
	var objBody = document.getElementsByTagName("body").item(0);
	var objOverlay = document.createElement("div");
	objOverlay.setAttribute("id","deactivate");
	objOverlay.style.width = "100%";
	objOverlay.style.height = "100%";
	objOverlay.style.backgroundColor = "black";
	objOverlay.style.opacity = ".5";
	objOverlay.style.filter = "alpha(opacity=50)";
	objOverlay.style.position = "absolute";
	objOverlay.style.zIndex = "100";
	objBody.insertBefore(objOverlay, document.getElementById("footer-position-wrapper"));
	var objLayer = document.createElement("div");
	objLayer.setAttribute("id","ajax_layer");
	objLayer.style.display = "block";
	objLayer.style.width = w+"px";
	objLayer.style.height = h+"px";
	objLayer.style.position = "absolute";
	objLayer.style.backgroundColor = "white";
	objLayer.style.zIndex = 2000;
	objLayer.style.padding = "10px";
	//objLayer.style.overflow = "hidden";
	objLayer.style.top = "50%";
	objLayer.style.left = "50%";
	objLayer.style.marginTop = "-"+Math.round(h/2)+"px";
	objLayer.style.marginLeft = "-"+Math.round(w/2)+"px";
	objBody.insertBefore(objLayer, document.getElementById("footer-position-wrapper"));

	var objFlash = document.createElement("div");
	objFlash.setAttribute("id","flash_video");
	objLayer.appendChild(objFlash)

	objOverlay.onclick = function(){
		removeScreencast()
	};
	
	var params = {};
				params.allowFullscreen = "true";
	
			// Flashvars
				var flashvars = {};
				flashvars.width = w;							// *required			Video-Width (min. 150px) 
				flashvars.height = h;							// *required			Video-Height (min. 50px)
				//flashvars.flv_path = 							// *required			Pfad zur FLV-Datei/MP4-Datei
								"Example.flv"; 			
				flashvars.flv_path = 							// *required			Pfad zur FLV-Datei/MP4-Datei
								url; 			

				flashvars.flv_smoothing = true; 				// [default:true]		Video-Smoothing	
				flashvars.flv_close_link = true;
				flashvars.flv_autoplay = true;					// [default:true]		Autoplay 
				flashvars.flv_repeat = false;					// [default:true]		Auto-Repeat
				flashvars.flv_show_speaker = true; 				// [default:true]		Show Speaker
				flashvars.flv_show_control = true; 				// [default:true]		Show Controlbar
				flashvars.flv_autohidecontrol = false;			// [default:true]		Autohide Controlbar
				flashvars.flv_autohidecontroldelay = 2;			// [default:2]			Autohide Controlbar Delay (sec.)
				flashvars.flv_allow_fullscreen = true;			// [default:true]		Allow Fullscreen (requires params.allowFullscreen = "true";)
		    	flashvars.flv_fullscreen_bg = "0x000000"		// [default:"0x000000"]	Fullscreen Background-Color (Hexadecimal)
		    	flashvars.flv_fullscreen_bg_alpha = 1			// [default:1]			Fullscreen Background-Transparency (0-1)
		    	flashvars.flv_volume = 1;						// [default:1]			Video-Volume (0-1);
		 		flashvars.flv_error_message = 					// [default:"Stream not found"]
											"Stream not found";	// Error-Message invalid FLV-Path		
	swfobject.embedSWF("../assets/data/swf/SiemensVideoPlayer.swf", "flash_video", w, h, "8.0.0", "", flashvars, params);
};

function removeScreencast(){
	var objBody = document.getElementsByTagName("body").item(0);
	objBody.removeChild($('deactivate'));
	objBody.removeChild($('ajax_layer'))
}