function init_form(){

	//on cache les divs
	//motivation
	$("div.spip_form_champ[input[@id=input-1-fichier_2]]").hide();
	//cv
	$("div.spip_form_champ[input[@id=input-1-fichier_1]]").hide();
	//commentaire
	$("div.spip_form_champ[textarea[@id=texte_2]]").hide();
	//race
	$("div.spip_form_champ[select[@id=input-1-select_4]]").hide();
	
	$("select#input-1-select_1").change( function() { showBlock($("select#input-1-select_1").val()) } );

}

function showBlock(choix){
	
	$("div.spip_form_champ[input[@id=input-1-fichier_2]]").hide();
	$("div.spip_form_champ[input[@id=input-1-fichier_1]]").hide();
	$("div.spip_form_champ[textarea[@id=texte_2]]").hide();
	$("div.spip_form_champ[select[@id=input-1-select_4]]").hide();
		$("div.spip_form_champ[select[@id=input-1-select_3]]").hide();
	
	switch (choix){
			
		case'select_1_2'://emploi
		case 'select_1_3'://stage
			$("div.spip_form_champ[input[@id=input-1-fichier_2]]").show();
			$("div.spip_form_champ[input[@id=input-1-fichier_1]]").show();	
			//désactiver la fonction submit du bouton et fair eun mailto a la place
			break;
			
		case'select_1_4'://catalogue
			$("div.spip_form_champ[select[@id=input-1-select_4]]").show();
			$("div.spip_form_champ[select[@id=input-1-select_3]]").show();
			break;
			
		case 'select_1_5'://amelioration
			$("div.spip_form_champ[textarea[@id=texte_2]]").show();

			break;
			
		default://contac normal
			$("div.spip_form_champ[select[@id=input-1-select_3]]").show();
			break;		
	}

}



/****** hand with main-menu *************************/


var tHideSubMenu = null;
	
	jQuery(document).ready(function(){
		jQuery('#mainnav dd').hide(); //hide all sub-menus
		//jQuery('body').ScrollToAnchors(800); //make a beautiful scroll for anchors
		
		//do the job for main-menu/sub-menu
		jQuery('#mainnav dt').hover(function() {
			//var dd = jQuery('dd', jQuery(this).parent());
			var dd = jQuery(this).next('dd');
			if (dd.filter(':visible').is('dd')) { //we are coming again on the same main-menu
				window.clearTimeout(tHideSubMenu);
			} else { //we're changing of main-menu
				//hide visible sub-menus
				hideSubMenus();
				//show the sub-menu
				dd.addClass('submenu_actif').slideDown(500);
			}
			//set timer for hiding sub-menu
			dd.hover(function() { //over the sub-menu
				window.clearTimeout(tHideSubMenu);
			}, function() { //out of the sub-menu
				setHideTimeout();
			});
		}, function() { //out of the main-menu');
			setHideTimeout();
		});
	});
	
	function setHideTimeout() {
		if (tHideSubMenu)
			window.clearTimeout(tHideSubMenu);
		tHideSubMenu = window.setTimeout('hideSubMenus()', 1000);
	}
	
	function hideSubMenus() { //hide all visible sub-menus
		jQuery('#mainnav dd.submenu_actif').removeClass('submenu_actif').slideUp(500);
	}
	//end of main-menu job