// JavaScript Document

function calc()
{
//alert(document.getElementById('time').value);
//if(document.getElementById('time').value>=3)
//{
//checkNumber(document.getElementById('time'));
if(document.getElementById('time').value !='')
{

document.getElementById('totaltime').value = (document.getElementById('time').value * document.getElementById('order').value);
document.getElementById('saving').value = ((document.getElementById('totaltime').value - (3 * document.getElementById('order').value))/60) + "hrs";
}
//}
else
{
document.getElementById('totaltime').value ="";
document.getElementById('saving').value="";

}

if(document.getElementById('time').value !='')
{
if(document.getElementById('time').value<3)
{
document.getElementById('msg').style.display='';
}
else
{
document.getElementById('msg').style.display='none';
}
}
else
{
document.getElementById('msg').style.display='none';

}
}
function checkNumber(val) {

		//alert("hello");
  var strPass = val.value;
  //alert (strPass);
  var strLength = strPass.length;
  var lchar = val.value.charAt((strLength) - 1);
  var cCode = CalcKeyCode(lchar);


  /* Check if the keyed in character is a number
     do you want alphabetic UPPERCASE only ?
     or lower case only just check their respective
     codes and replace the 48 and 57 */
	 if(val.value!='')
	 {
  if (cCode < 45 || cCode > 57  || cCode == 47 ) {
  //alert("HELLO");
    var myNumber = val.value.substring(0, (strLength) - 1);
	alert("Please enter the numeric value only.");
    val.value = myNumber;
	return false;
	}
  }
  
}
function CalcKeyCode(aChar) {
  var character = aChar.substring(0,1);
  var code = aChar.charCodeAt(0);
  return code;
}