<!--
   function ClearForm(form){

    form.weight.value = "";

    form.height.value = "";

    form.bmi.value = "";


   }

   function bmi(weight, height) {


          bmindx=weight/eval(height*height);

          return bmindx;
   }

   function checkform(form) {
       
              
        if (form.weight.value==null || form.weight.value.length==0 || isNaN(form.weight.value))
        {
            alert("\n Bitte geben Sie Ihr Gewicht ein! ");         
                document.bmi.weight.focus();           
                        return false;
        }

       if (form.height.value==null || form.height.value.length==0 || isNaN(form.height.value))
        {
            alert("\n Bitte geben Sie Ihre Gr&ouml;&szlig;e ein! ");
                document.bmi.height.focus();
            return false;
        }       
 
   
         if (parseFloat(form.height.value) <= 90 ||parseFloat(form.height.value) >=250)
        {

         alert("\nIhre Gr&ouml;&szlig;e scheint nicht korrekt?");

            return false;

       }


        else if (parseFloat(form.weight.value) <= 35 || parseFloat(form.weight.value) >=250)
        {

         alert("\n Ihr Gewicht scheint nicht korrekt!");

            
            return false;
       }


       return true;
   }

   function computeform(form) {


       if (checkform(form)) {

       yourbmi=Math.round(bmi(form.weight.value, form.height.value/100));

       form.bmi.value=yourbmi; 
   }


}

// -- Skriptende -->