/////////////////////////////////////////////
// This file contains generic  
// mesurement conversion and validation 
// javascript functions
//
// Author: unknown, but JVS takes responsablity
// Date  : 09/20/01
//
/////////////////////////////////////////////
/////////////////////////////////////////////

/////////////////////////////////
//Convert feet to meters.
////////////////////////////////
function feetToMeter(feeValue)
{
	var lfeeValue="";
	num1 = parseFloat(feeValue);
	num1 = num1 * 0.3048;
	num1 = roundByDecimal(num1,2); 
	lfeeValue = String(num1);
	lfeeValue = truncateLeftDigits(lfeeValue,1);
	return lfeeValue;
}	
	
/////////////////////////////////
//Convert meters to feet
////////////////////////////////
function meterToFeet(meterValue)
{
	
	num1 = parseFloat(meterValue);
	num1 = num1 * 3.2808;
	num1 = roundByDecimal(num1,2); 
	meterValue = String(num1);

	return truncateLeftDigits(meterValue,1);
	
}	
	
/////////////////////////////////
//Convert miles to kilometer
////////////////////////////////
function mileToKiloMeter(mileValue)
{
	
	num1 = parseFloat(mileValue);
	num1 = num1 * 1.6093;
	num1 = roundByDecimal(num1,2); 
	kiloMeterValue = String(num1);	
	return truncateLeftDigits(kiloMeterValue,1);
	
}		
	
/////////////////////////////////
//Convert miles to kilometer
////////////////////////////////
function kiloMeterToMile(kiloValue)
{
	
	num1 = parseFloat(kiloValue);
	num1 = num1 * 0.6214;
	num1 = roundByDecimal(num1,2); 
	MilesMeterValue = String(num1);	
	return truncateLeftDigits(MilesMeterValue,1);
		
}		
	
///////////////////////////////////
// Truncates digits to the left.
//////////////////////////////////
function truncateLeftDigits(valueToTruncate,positionToTruncate)
{
   var pos=0;
   pos = valueToTruncate.indexOf(".");
   if (pos < 1 )
   {
     return valueToTruncate;
   } 
   
   valueToTruncate=valueToTruncate.substring(0,(pos+1+positionToTruncate));
  
 
  return valueToTruncate;
   
}

///////////////////////////////////
//Round by left digit
//////////////////////////////////
function roundByDecimal(roundNum, decPos)
{
 i= 10.0;

 i = Math.pow(i,decPos);

 i = i/10;

	roundNum=roundNum * i ;
	roundNum = Math.round(roundNum);

	roundNum = roundNum / i;
	return roundNum

} 

///////////////////////////////////
///////////////////////////////////
// Converting radius to Kilometers
// or miles depeding on the type
// selected.
//////////////////////////////////
function switchRadiusToKilo(radiusSelectObj, valueObj)
{

   var radiusValue = valueObj.value;

   if ((getSelectValue(radiusSelectObj) == "Kilometers") && 
   	(radiusValue.length > 0))
   {
      
	//document.asrLocationSearch.fiRadius.value= mileToKiloMeter(radiusValue);   
	
	valueObj.value = mileToKiloMeter(radiusValue);   
   }
   if ((getSelectValue(radiusSelectObj) == "Miles") && 
      	(radiusValue.length > 0))
      {
         
   	//document.asrLocationSearch.fiRadius.value= kiloMeterToMile(radiusValue);
   	valueObj.value =  kiloMeterToMile(radiusValue);
      }
   
   
	return true;
}	


///////////////////////////////////
// Converting radius to meters
// or feet or viceversa depeding on the type
// selected.
//////////////////////////////////
function switchFeetAndMeter(radiusSelectObj, valueObj)
{

   var radiusValue = valueObj.value;

   if ((getSelectValue(radiusSelectObj) == "Meters") && 
   	(radiusValue.length > 0))
   {
	radiusValue = feetToMeter(radiusValue);
   }
   else
   {
   	if ((getSelectValue(radiusSelectObj) == "Feet") && 
      	(radiusValue.length > 0))
   	   {
   		radiusValue = meterToFeet(radiusValue);
   	   }
   }
    
   	valueObj.value= radiusValue;
   	return true;
}