//Masquage de toutes les questions sauf la premiere
function display_first() {
	document.getElementById('txt_1').style.display = "block";
	document.getElementById('tit_1').className = "current";
}

/* Fonction de roll-over avec préchargements des images */
function init_rollover()
{
	if (document.getElementById)
	{
		var j = 0;
		var k = 0;
		var l = 0;
		for (var i = 0; i < document.images.length; i++)
		{
			var image=document.images[i];
			if (!image.getAttribute("overSrc","false") && !image.getAttribute("clickSrc","false"))
			continue;
			eval("outImage"+j+"=new Image();");
			eval("outImage"+j+".src=image.src;");
			if (image.getAttribute("overSrc","false"))
			{
				eval("overImage"+k+"=new Image();");
				eval("overImage"+k+".src=image.getAttribute('overSrc',false);");
				image.onmouseover=new Function("this.src=overImage"+k+".src");
				k++;
			}
			if (image.getAttribute("clickSrc","false"))
			{
				eval("clickImage"+l+"=new Image();");
				eval("clickImage"+l+".src=image.getAttribute('clickSrc',false);");
				image.onmousedown = new Function("this.src=clickImage"+l+".src;");
				image.onmouseup = new Function("this.src=outImage"+j+".src;");
				l++;
			}
			image.onmouseout = new Function("this.src=outImage"+j+".src");
			j++;
		}
	}
	display_first();
}

onload = init_rollover;