function RazRegions() {
	for (i=document.form1.selectregions.options.length-1; i>=1 ; i--) {
	document.form1.selectregions.options[document.form1.selectregions.options.length-1]=null;
	}	
	RazDepartements();
}

function RazDepartements() {
	for (i=document.form1.selectdepartements.options.length-1; i>=1 ; i--) {
	document.form1.selectdepartements.options[document.form1.selectdepartements.options.length-1]=null;
	}	
	
}


function TraiterRegions(idx) {
	
if (idx!="FR") { 
	RazRegions();
	//document.form1.selectregions.style.display="none";
	//document.form1.selectdepartements.style.display="none";
	}

if (idx=="FR") {
	
	//document.form1.selectregions.style.display="";
	for (i=1; i<=(regions.length-1) ; i++) {
		nomOption = new Option(regions[i],i)
		document.form1.selectregions.options[document.form1.selectregions.options.length]=nomOption
		}	
	}
}


function TraiterDepartements(idx) {
	
	RazDepartements();
	//document.form1.selectdepartements.style.display="";
	var dpt_1 = new Array();
	var dpt_2 = new Array();
	j=0;

	for (i=1; i<=(dptlabel.length-1) ; i++) {

		if (dptregion[i] == idx) {
			dpt_1[j]=dptlabel[i];
			dpt_2[j]=dptnum[i];
			j++;
			}	
		}
	
	for (i=0; i<=(dpt_1.length-1) ; i++) {
		nomOption = new Option(('('+dpt_2[i]+') '+dpt_1[i]),dpt_2[i]) ;
		document.form1.selectdepartements.options[document.form1.selectdepartements.options.length]=nomOption ;
		}
}