<!--Script élaboré par Pierre Boucher pour http://www.lavoile.com-->
<!--- hide script from old browsers

// *********************limiter a 2 decimal apres le point***********
function convdec(strng)
{
   if (strng == 0)
      {
      return "0.0";
      }
   else
      {
      var str = "" + (Math.round(strng * 100));
      return(str.substring(0, str.length-2) + "." + str.substring(str.length-2, str.length));
      }
}
// ********************************************************************


function vitessecoque(form) {form.result1.value = convdec((Math.sqrt(form.lwl.value *
1)) * (2.43 * 1))
                                  form.unit.value = "Noeuds"}

function vcoque_p(form) {form.result1.value = convdec((Math.sqrt(form.lwlp.value *
1)) * (1.341743042 * 1))
                                  form.unit.value = "Noeuds"}

function n_pieds(form) {form.result1.value = convdec((form.feet.value * 1) *
(101.3000 * 1))
                            form.unit.value = "Pieds/minute"}

function pgeo(form) {form.result1.value = convdec((2.11 * 1) *
(Math.sqrt(form.wvspd.value * 1)))
                                  form.unit.value = "Milles Nautiques"} 

function pgeo_p(form) {form.result1.value = convdec((1.17 * 1) *
(Math.sqrt(form.wvspdp.value * 1)))
                                  form.unit.value = "Milles Nautiques"}

function mt_mn(form) {form.result1.value = convdec((form.mile.value * 1) * (0.86897624* 1))
                            form.unit.value = "Milles Nautiques"}

function mn_mt(form) {form.result1.value = convdec((form.milen.value * 1) * (1.150776515
* 1))
                            form.unit.value = "Milles statutaires"}

function mn_pieds(form) {form.result1.value = convdec((form.mn.value * 1) * (6076.11549
* 1))
                            form.unit.value = "pieds"}

function km_n(form) {form.result1.value = convdec((form.kilo.value * 1) * (0.539956803
* 1))
                            form.unit.value = "Milles Nautiques"}
                        
function n_km(form) {form.result1.value = convdec((form.knots.value * 1) *
(1.85200 * 1))
                            form.unit.value = "Kilometres/heure"}

function area(form) {
a=eval(form.a.value)
b=eval(form.b.value)
c=eval(form.c.value)
s=(a+b+c)/2
area1=s-a
area2=s-b
area3=s-c
total=s*(s-a)*(s-b)*(s-c)
totalarea=Math.sqrt(total)
form.result1.value = convdec(totalarea)
                            form.unit.value = "pieds ou mètres carrés"
}

function display (textfield)

{

}

// end hiding contents from old browsers  -->