var video = document.querySelector("#videoElement");
			
navigator.getUserMedia = navigator.getUserMedia ||
						 navigator.webkitGetUserMedia ||
						 navigator.mozGetUserMedia || 
						 navigator.msGetUserMedia || 
						 navigator.oGetUserMedia;
if(navigator.getUserMedia)
{
	navigator.getUserMedia({video: true, audio: true}, handleVideo, videoError);
}
			
function handleVideo(stream)
{
	video.src = window.URL.createObjectURL(stream);
}
			
function videoError(e)
{
	//do somthing
}