function checkMessage(){
	if(document.getElementById('message').value==''){alert('You should write a message first!');return false;}
}


function writeMovie(poster, url){
	var objTag = '<object type="video/x-m4v" data="'+poster+'" height="150" width="150">'
				+'<param name="src" value="'+poster+'" />'
				+'<param name="target" value="myself" />'
				+'<param name="href" value="'+url+'" />'
				+'<param name="controller" value="false" />'
				+'<param name="autoplay" value="false" />'
				+'</object>';
	document.writeln(objTag);
}