function get(element){
var el=document.getElementById(element);
return el;
}

function fade_in_out(element){
var el=get(element);
if ((el.style.display=="none") || (el.style.display==""))affiche(element,1);
else if((el.style.display=="block")||(el.style.display=="inline"))masque(element,1);
}

function masque(element,tps,vts){
var el=get(element);
	if(el.style.display=="inline" || el.style.display=="block"){
		if(!vts)var vts=300;
		if(!tps || tps==0)
			el.style.display="none";
		else setTimeout("fadeout('"+element+"','"+vts+"');",tps);
	}
}

function affiche(element,tps,vts){
var el=get(element);
	if(el.style.display=="none" || el.style.display==""){
		if(!vts)var vts=300;
		if(!tps || tps==0){
			changeOpac(100,element);
			el.style.display="block";
		}else setTimeout("fadein('"+element+"','"+vts+"');",tps);
	}
}

function changeOpac(opacity,id) {
	var object=get(id).style;  
	if(opacity==0)
		masque(id);
	else 
		object.display="block";
	object.opacity = (opacity / 100);  
	object.MozOpacity = (opacity / 100);  
	object.KhtmlOpacity = (opacity / 100);  
	object.filter = "alpha(opacity=" + opacity + ")";  
}  

function fadein(element,vitesse){
	var speed = Math.round(vitesse / 100);  
	var timer= 0;  
	changeOpac(1,element);
	for(i=0;i<= 100;i++){  
		setTimeout("changeOpac("+i+",'"+element+"')",(timer*speed));  
		timer++;  
	}
}

function fadeout(element,vitesse){ 
	var speed = Math.round(vitesse / 100);  
	var timer= 0;
	changeOpac(100,element);
	for(i=100;i>=0;i--){  
		setTimeout("changeOpac("+i+",'"+element+"')",(timer*speed));  
		timer++;  
	}
}