function ValidateData() {

//Submission variable
var CanSubmit = false;

//Check to make sure that the worksheet title field is not empty.
CanSubmit = ForceEntry("WorksheetTitle", "Please enter a title for the worksheet.");
if (!CanSubmit) return;

// check numeric entries are numeric 
CanSubmit = ForceNumber("QuestionCount", "Number of questions");
if (!CanSubmit) return;

CanSubmit = ForceNumber("RangeLower", "Starting number (lower range)");
if (!CanSubmit) return;

CanSubmit = ForceNumber("RangeUpper", "Starting number (upper range)");
if (!CanSubmit) return;

CanSubmit = ForceNumber("SecondRangeLower", "Number to multiply by (lower range)");
if (!CanSubmit) return;

CanSubmit = ForceNumber("SecondRangeUpper", "Numbers to multiply by (upper range)");
if (!CanSubmit) return;

// check question range
if (parseInt(document.getElementById("QuestionCount").value) < 1 || parseInt(document.getElementById("QuestionCount").value) > 99)  
  { 
  alert ("Please enter a value in the 'number of questions' box between 1 and 99."); 
  CanSubmit = false;
  return; 
  } 

// check no division by zero has been entered
if (parseInt(document.getElementById("RangeLower").value)==0)
	{
	alert("Please enter a non-zero number in the 'starting number (lower range)' box.");
	CanSubmit=false;
	errorColor(document.getElementById("RangeLower"));
	return;
	}
if (parseInt(document.getElementById("RangeUpper").value)==0)
	{
	alert("Please enter a non-zero number in the 'starting number (upper range)' box.");
	CanSubmit=false;
	errorColor(document.getElementById("RangeUpper"));
	return;
	}
if (parseInt(document.getElementById("SecondRangeLower").value)==0)
	{
	alert("Please enter a non-zero number in the 'divide by number (lower range)' box.");
	CanSubmit=false;
	errorColor(document.getElementById("SecondRangeLower"));
	return;
	}
if (parseInt(document.getElementById("SecondRangeUpper").value)==0)
	{
	alert("Please enter a non-zero number in the 'divide by number (upper range)' box.");
	CanSubmit=false;
	errorColor(document.getElementById("SecondRangeUpper"));
	return;
	}

//If fields have been entered correctly, submit the form
if (CanSubmit) document.LayoutDivision.submit();

} //end function