function montre(id,id2) {
			
		var myStretch = document.getElementsByClassName('stretch');
		var myStretcher = document.getElementsByClassName('stretcher');
		var myAccordion = new fx.Accordion(myStretch, myStretcher, {opacity: false});
        myAccordion.showThisHideOpen(myStretcher[id]);
		
		var myStretch2 = document.getElementsByClassName('stretch2');
		var myStretcher2 = document.getElementsByClassName('stretcher2');
		var myAccordion2 = new fx.Accordion(myStretch2, myStretcher2, {opacity: false});
		myAccordion2.showThisHideOpen(myStretcher2[id2]);
}

function show(){
var test=document.getElementsByTagName('dd'); 
for (var i=0; i<test.length; i++){
if (test[i].className!=	'stretcher')continue;
test[i].style.display='block';
}
}

function is_numeric(field){
	return !isNaN(document.getElementById(field).value);
}
function is_email(field){
	rx=new RegExp("^[\\w\.-]+@[\\w\\.-]+\\.[a-zA-Z]{2,4}$");
	if(!rx.test(document.getElementById(field).value)){
		return false;
	} else {
		return true;
	}
}
function is_empty(field){
	if(document.getElementById(field).value == ''){
		return true;
	} else {
		return false;
	}
}