//-----------------------------------------------------------------------//
function isLeapYear(sYear)                                               //
//-----------------------------------------------------------------------//
//          function name: isLeapYear()                                  //
//             created by: Dustin Brown                                  //
//             created on: 2/20/2001                                     //
//                purpose: given a year ('sYear'), determine if it is a  //
//                         leap year.                                    //
//             parameters: sYear - the year to be evaluated.             //
//                returns: true if 'sYear' is a leap year; false if it   //
//                         is not or if 'sYear' is not a valid year.     //
// include files required: validYear.js                                 //
//-----------------------------------------------------------------------//
{
	//verify 'sYear' is a valid year
	if(!validYear(sYear))return false;
	
	//determine whether 'sYear' is a leap year and return the results
	if(sYear/4==parseInt(sYear/4)){
		if(sYear/100==parseInt(sYear/100)){
			if(sYear/400==parseInt(sYear/400))return true;
			else return false;
		}
		else return true;
	}
	else return false;
}
//End function isLeapYear()----------------------------------------------//