// Choix des unités RECTANGLE
function check(browser){
	var loop=1;
	var answer="answer";
	for (loop=1;loop<=6;loop++){
	answer ="answer"+loop;
	document.getElementById(answer).value=browser;
	}
    }
// Formulaire RECTANGLE
function rectangle(){
	fmm = document.form_rectangle;//Math.round(..)
	if((fmm.rec1.value!="")&&(fmm.rec2.value!="")){
	fmm.rec3.value=Math.round(fmm.rec1.value*fmm.rec2.value*100)/100;
	}	
	}
function rectangle1(){
	fmm = document.form_rectangle;//Math.round(..)
	if((fmm.rec1.value!="")&&(fmm.rec2.value!="")&&(fmm.rec4.value!="")){
	var rapport=fmm.rec2.value/fmm.rec1.value;
	fmm.rec5.value=Math.round(Math.sqrt(fmm.rec4.value/rapport)*100)/100;
	fmm.rec6.value=Math.round(fmm.rec4.value/fmm.rec5.value*100)/100;
	}
	}
function pageFocus_rectangle(){
	document.form_rectangle.Button.focus();}

// Choix des unités CARRE
function check1(browser1){
	var loop=1;
	var answe="answe";
	for (loop=1;loop<=5;loop++){
	answe ="answe"+loop;
	document.getElementById(answe).value=browser1;
	}
    }
// Formulaire CARRE
function carre1(){
	fmm = document.form_carre1;//Math.round(..)
	if(fmm.rec7.value!=""){
	fmm.rec9.value=fmm.rec7.value*fmm.rec7.value
	}	
	}
function carre2(){
	fmm = document.form_carre1;//Math.round(..)
	if((fmm.rec7.value!="")&&(fmm.rec10.value!="")){
	fmm.rec11.value=Math.round(Math.sqrt(fmm.rec10.value)*100)/100;
	fmm.rec12.value=fmm.rec11.value;
	}
	}
function pageFocus_carre1(){
	document.form_carre1.Button.focus();}
	
// Choix des unités CERCLE
function check2(browser2){
	var loop=1;
	var answ="answ";
	for (loop=1;loop<=6;loop++){
	answ ="answ"+loop;
	document.getElementById(answ).value=browser2;
	}
    }
// Formulaire CERCLE
function cercle(){
	fmm = document.form_cercle;//Math.round(..)
	if(fmm.cer1.value!=""){
	fmm.cer3.value=Math.round((fmm.cer1.value*Math.PI)*100)/100;
	fmm.cer2.value=Math.round(((fmm.cer1.value/2)*(fmm.cer1.value/2)*Math.PI) *100)/100;
	}	
	}
function cercle2(){
	fmm = document.form_cercle;//Math.round(..)
	if((fmm.cer1.value!="")&&(fmm.cer4.value!="")){
	fmm.cer5.value=Math.round(2*Math.sqrt((fmm.cer4.value/Math.PI))*100)/100;
	fmm.cer6.value=Math.round(((2*Math.sqrt((fmm.cer4.value/Math.PI)))*Math.PI)*100)/100;
	}
	}
function pageFocus_cercle(){
	document.form_cercle.Button.focus();}

// Choix des unités DEMI CERCLE
function check3(browser3){
	var loop=1;
	var ans="ans";
	for (loop=1;loop<=7;loop++){
	ans ="ans"+loop;
	document.getElementById(ans).value=browser3;
	}
    }
// Formulaire DEMI CERCLE
function demi(){
	fmm = document.form_demi;//Math.round(..)
	if(fmm.dem1.value!=""){
	fmm.dem2.value=Math.round(((fmm.dem1.value/2)*(fmm.dem1.value/2)*Math.PI)/2 *100)/100;
	var peri=fmm.dem1.value*Math.PI/2;
	var base=fmm.dem1.value
	var peri=parseFloat(peri)+parseFloat(base);
	fmm.dem6.value=Math.round(peri*100)/100;
	}	
	}
function demi1(){
	fmm = document.form_demi;//Math.round(..)
	if((fmm.dem1.value!="")&&(fmm.dem3.value!="")){
	fmm.dem4.value=Math.round(2*Math.sqrt(((fmm.dem3.value*2)/Math.PI))*100)/100;
	fmm.dem5.value=Math.round(fmm.dem4.value/2*100)/100;
	var perim=fmm.dem4.value*Math.PI/2;
	var bas=fmm.dem4.value;
	var perim=parseFloat(perim)+parseFloat(bas) ;
	fmm.dem7.value=Math.round(perim*100)/100;
	}
	}
function pageFocus_demi(){
	document.form_demi.Button.focus();}
	
// Choix des unités ELLIPSE
function check4(browser4){
	var loop=1;
	var an="an";
	for (loop=1;loop<=8;loop++){
	an ="an"+loop;
	document.getElementById(an).value=browser4;
	}
    }
// Formulaire ELLIPSE
function ell(){
	fmm = document.form_ell;//Math.round(..)
	if((fmm.el1.value!="")&&(fmm.el2.value!="")){
	fmm.el3.value=Math.round( ((Math.PI/4)*fmm.el1.value*fmm.el2.value)*100 )/100;
	var a=fmm.el1.value/2;
	var b=fmm.el2.value/2;
	fmm.el7.value=Math.round( (Math.PI*Math.sqrt(2*( (a*a)+(b*b)) ) ) *100 )/100;
	}	
	}
function ell1(){
	fmm = document.form_ell;//Math.round(..)
	if((fmm.el1.value!="")&&(fmm.el2.value!="")&&(fmm.el4.value!="")){
	var rapp=fmm.el1.value/fmm.el2.value;
	fmm.el5.value=Math.round(Math.sqrt(((4*fmm.el4.value)/Math.PI)/rapp)*100)/100;
	fmm.el6.value=Math.round(fmm.el5.value*rapp*100)/100;
	var ael=fmm.el5.value/2;
	var bel=(fmm.el5.value*rapp)/2;
	fmm.el8.value=Math.round( (Math.PI*Math.sqrt(2*( (ael*ael)+(bel*bel)) ) ) *100 )/100;
	}
	}
function pageFocus_ell(){
	document.form_ell.Button.focus();}