var playbtn = new Image();
var pausebtn = new Image();
var playing = true;
var stoping = false;

playbtn.src = "style/controls_play.gif";
pausebtn.src = "style/controls_pause.gif";
		
function togglePlay(){
	if (document.getElementById) imgObj = document.getElementById('play_pause'); // ie5/ns6
	else if (document.layers) imgObj = document.container.document.controls.document.play_pause; // ns4
	else imgObj = document.play_pause; // ie4
	if (playing) {
		ss.pause()
		playing = false;
		stoping = true;
		imgObj.src = playbtn.src;		
	}
	else {
		if(stoping)
		ss.next();ss.play()
		playing = true;
		stoping = false;
		imgObj.src = pausebtn.src;	
	}
}