function IsNumeric(sText)
{
   var ValidChars = "0123456789";
   var IsNumber=true;
   var Char;

 
   for (i = 0; i < sText.length && IsNumber == true; i++) 
      { 
      Char = sText.charAt(i); 
      if (ValidChars.indexOf(Char) == -1) 
         {
         IsNumber = false;
         }
      }
   return IsNumber;
   
}

function isNumber ( evt ) {
    var keyCode = evt.which ? evt.which : evt.keyCode;
   alpha = ( keyCode >= 'a'.charCodeAt ( ) &&
      keyCode <= 'z'.charCodeAt ( ) ) || 
      ( keyCode >= 'A'.charCodeAt ( ) &&
      keyCode <= 'Z'.charCodeAt ( ) ) || 
      ( keyCode == 8 && keyCode == 46 );
   return ( alpha );
}



function isAlpha ( evt ) {
   var keyCode = evt.which ? evt.which : evt.keyCode;
   alpha = ( keyCode >= 'a'.charCodeAt ( ) &&
      keyCode <= 'z'.charCodeAt ( ) ) || 
      ( keyCode >= 'A'.charCodeAt ( ) &&
      keyCode <= 'Z'.charCodeAt ( ) ) || 
      ( keyCode >= 8 && keyCode <= 46 );
   return ( alpha );
}

function validateAlpha ( text ) {
   for ( c=0; c < text.length; c ++ ) {
      alpha = ( text.charCodeAt ( c ) >= 65 &&
         text.charCodeAt ( c ) <=90 ) || 
         ( text.charCodeAt ( c ) >= 97 &&
         text.charCodeAt ( c ) <=122 )
      if ( !alpha ) {
         alert ( 'No way, sorry.' );   
         document.theForm.theField.select ( );
         return false;
      }
   }
   return true;
}


function getDateObject(dateString,dateSeperator)
{
	//This function return a date object after accepting 
	//a date string ans dateseparator as arguments
	var curValue=dateString;
	var sepChar=dateSeperator;
	var curPos=0;
	var cDate,cMonth,cYear;

	//extract day portion
	curPos=dateString.indexOf(sepChar);
	cDate=dateString.substring(0,curPos);
	
	//extract month portion				
	endPos=dateString.indexOf(sepChar,curPos+1);
	cMonth=dateString.substring(curPos+1,endPos);

	//extract year portion				
	curPos=endPos;
	endPos=curPos+5;			
	cYear=curValue.substring(curPos+1,endPos);
	
	//Create Date Object
	dtObject=new Date(cYear,cMonth,cDate);	
	return dtObject;
}