function Beregn(str)
{
	try
	{
		str = str.replace(',','.');
		if(IsNumeric(str))
			document.myform.AMOUNT.value = (parseFloat(str*100).toFixed(0));
	}
	catch(err)
	{
	}
}


function IsNumeric(sText)

{
   var ValidChars = "0123456789.";
   var IsNumber=true;
   var Char;

 
   for (i = 0; i < sText.length && IsNumber == true; i++) 
      { 
      Char = sText.charAt(i); 
      if (ValidChars.indexOf(Char) == -1) 
         {
         IsNumber = false;
         }
      }
   return IsNumber;
   
}