function cache_form(){
	
	browser = window.browser;
	flashinstalled = window.flashinstalled;
	flashversion = window.flashversion;

	var isIE  = (navigator.appVersion.indexOf("MSIE") != -1) ? true : false;
	
	//on cache le formulaire et on affiche la div global contenant l'animation de chargement
	document.getElementById('log').style.visibility="hidden";
	document.getElementById('log_img').style.visibility="visible";
	
	//Si c'est windows et que flash est installé et que la version est plus grande ou egal que la premiere version (ce qui coule de source)

	if(browser =="Internet Explorer" && flashinstalled == 2 && flashversion>=1){
		var so = new SWFObject("img/anim_loader.swf", "anim_loader", "16", "16", "1", "#FFFFFF","true");
		so.addParam("wmode", "transparent");
		//on charge le flash
		so.write("anim_loader");
		
		document.getElementById('anim_loader').style.visibility="visible";
		document.getElementById('anim_loader').style.visibility="relative";
		
	}else{
		document.getElementById('anim_loader_gif').style.visibility="visible";
		document.getElementById('anim_loader_gif').style.visibility="relative";
	}
}