var titles=new Array();
	titles[0]='Demain, la révolution...';
	titles[1]='Ceci est un homme.';
	titles[2]='Nulle part, terre promise.';
	titles[3]="Là où je pense.";

	var prefix=new Array();
	prefix[0]='images/demain-la-revolution-';
	prefix[1]='images/ceci-est-un-homme-';
	prefix[2]='images/nulle-part-terre-promise-';
	prefix[3]="images/la-ou-je-pense-";
	
	function highlight(item){

		
		document.getElementById("mainpic_image1").style.className ="class"+item;
		document.getElementById("mainpic_image2").style.className ="class"+item;
		document.getElementById("mainpic_image3").style.className ="class"+item;
		document.getElementById("mainpic_image4").style.className ="class"+item;
		document.getElementById("mainpic_image1").src =prefix[item]+"0"+".jpg";
		document.getElementById("mainpic_image2").src =prefix[item]+"1"+".jpg";
		document.getElementById("mainpic_image3").src =prefix[item]+"2"+".jpg";
		document.getElementById("mainpic_image4").src =prefix[item]+"3"+".jpg";
	
	

}