function Calculate()
{
  var amount = 0.00;
  var yearly = 0.00;
  if (!ValidEntry(document.forms['default'].Pages.value))
  {
    document.getElementById("Setup_Fee").innerHTML = "";
    document.getElementById("Management_Fee").innerHTML = "";
    document.getElementById("Update_Fee").innerHTML = "";
    return;
  }
  if (document.forms['default'].Copyright[0].checked)
  {
    var firstpage = 400.00;
    var eachpage  = 50.00;
  }
  else
  {
    var firstpage = 200.00;
    var eachpage  = 25.00;
  }
  var yearlyFirstPage = 200.00;
  var yearlyEachPage  = 25.00;
  
  var pages = document.forms['default'].Pages.value;
  amount = firstpage + eachpage * (pages - 1);
  yearly = yearlyFirstPage + yearlyEachPage * (pages - 1);
  
  var dec = ".";
  
  var samount = "$";
  var syearly = "$";
  
  samount += amount;
  syearly += yearly;
  
  if (samount.indexOf(dec) != -1)
  {
    if (samount.indexOf(dec) == (samount.length - 2))
    {
      samount += "0";
    }
  }
  document.getElementById("Setup_Fee").innerHTML = samount;
  document.getElementById("Setup_Fee_Note").innerHTML = "(one-time)";
  document.getElementById("Management_Fee").innerHTML = syearly;
  document.getElementById("Management_Fee_Note").innerHTML = "/year";
  document.getElementById("Update_Fee").innerHTML = "$5";
  document.getElementById("Update_Fee_Note").innerHTML = "/update";
  document.getElementById("calculator_status").innerHTML = "Here's your quotation!";
  return true;
}

function ValidEntry(item)
	{
	var valid = new Boolean(true);

	if (item.length > 0)
	 	{
		var numblank = 0;
		for(i=0; i<item.length; i++)
			{
			if(item.indexOf(" ", i) != -1)
				{numblank += 1;}
			}
		if (numblank == item.length)
			{
				valid = false;
			}
		}
	else
		{
			valid = false;
		}
		
 	if (item <= 0)
   	 	{
			valid = false;
		}
		
	if (item %1!= 0)
	   	{
			valid = false;
		}	

	    if (isNaN(item))
		{
			valid = false;
		}
	return valid;
	}