function affiche(index)
{
		document.getElementById("top").innerHTML=document.getElementById("contenu"+index).innerHTML;
		document.getElementById("top").className='visible';
		for (j=1; j<=document.getElementById('nbdiv').value; j++)
		{ 
			document.getElementById("id"+j).className='masquer';
		}
}


function cache()
{
		document.getElementById("top").innerHTML='';
		document.getElementById("top").className='masquer';
		
		for (j=1; j<=document.getElementById('nbdiv').value; j++)
		{ 
			document.getElementById("id"+j).className='visible';
		}
}



/*preload des images*/


pic1 = new Image()
pic1.scr='images/img_creativite.jpg'; 
pic2 = new Image();
pic2.src='images/plus.gif';
pic3 = new Image();
pic3.src='images/moins.gif';
pic4 = new Image()
pic4.scr='images/img_reactivite.jpg'; 
pic5 = new Image();
pic5.src='images/img_visibilite.jpg';
pic6 = new Image();
pic6.src='images/img_prix.jpg';
pic7 = new Image();
pic7.src='images/image1_over.gif';
pic8 = new Image();
pic8.src='images/image1.gif'
pic9 = new Image();
pic9.src='images/image2_over.gif';
pic10 = new Image();
pic10.src='images/image2.gif'
pic11 = new Image();
pic11.src='images/image3_over.gif';
pic12 = new Image();
pic12.src='images/image3.gif'
pic13 = new Image();
pic13.src='images/image4_over.gif';
pic14 = new Image();
pic14.src='images/image4.gif';
pic15 = new Image();
pic15.src='images/image5_over.gif';
pic16 = new Image();
pic16.src='images/image5.gif';
pic17 = new Image();
pic17.src='images/li.gif';
pic18 = new Image();
pic18.src='images/li2.gif';