function showPlayer(){
		sendEvent('yoplayer','volume','0');
		displayAjax(true,true,hidePlayer);
		var arrayPageSize = getPageSize();
		var arrayPageScroll = getPageScroll();
		var top = arrayPageScroll[1] + ((arrayPageSize[3] - 35 - 425) / 2);	
		var left = (getPageSize()[2]/2-366/2);
		document.getElementById('lecteur_youtube').style.left=left+"px";
		document.getElementById('lecteur_youtube').style.display="block";
		new Effect.Move("lecteur_youtube",{ x: left, y: top, mode: 'absolute', transition: Effect.Transitions.sinoidal ,afterFinish: function(obj){
																																  		
																																	hideLoading();
																																	} });
		
}
function hidePlayer(){
	sendEvent('yoplayer','volume','50');
	objOverlay = document.getElementById('overlay');
	objLightbox = document.getElementById('lecteur_youtube');
	var left = objLightbox.style.left.replace(/px/,"");
	new Effect.Move(objLightbox,{ x: left, y:-1000, mode: 'absolute', transition: Effect.Transitions.sinoidal ,afterFinish: function(obj){
																																  		document.getElementById('lecteur_youtube').style.display = 'none';																																			

																																	hideAjax();
																																	} });
	
}




function displayAjax(clickToClose,loading,callBackFunction){

	selects = document.getElementsByTagName("select");
	for (i = 0; i != selects.length; i++) {
			selects[i].style.visibility = "hidden";
	}


	var arrayPageSize = getPageSize();
	var arrayPageScroll = getPageScroll();
	
	var objOverlay = document.getElementById('overlay_common');

	objOverlay.style.position = 'absolute';
	objOverlay.style.top = '0';
	objOverlay.style.left = '0';
	objOverlay.style.zIndex = '90';
 	objOverlay.style.width = '100%';
	objOverlay.style.height = (arrayPageSize[1] + 'px');
	objOverlay.style.display = 'block';
	
	if(clickToClose){
		objOverlay.style.cursor='pointer';
		objOverlay.onclick =eval(callBackFunction);
	}
	
	//var objLoadingImage = document.getElementById('loadingImage_common');	
	if(loading){
		var top = arrayPageScroll[1] + ((arrayPageSize[3] - 35 - 15) / 2);	
		document.getElementById('loadingImage_common').style.left=(getPageSize()[2]/2-214/2)+"px";
		document.getElementById('loadingImage_common').style.top=(top)+"px";
		document.getElementById('loadingImage_common').style.display="block";
	}
	
	
}
function hideAjax(){
	hideLoading();
	hideOverlay();
}

function hideLoading(){

	var objLoadingImage = document.getElementById('loadingImage_common');
	objLoadingImage.style.display = 'none';
}
function hideOverlay(){	
	if(document.getElementById("player_display")){
		document.getElementById("player_display").style.visibility="visible";
	}
	selects = document.getElementsByTagName("select");
	
        for (i = 0; i < selects.length; i++) {
                selects[i].style.visibility = "visible";
        }

	var objOverlay = document.getElementById('overlay_common');
	objOverlay.style.display = 'none';
}