function chkemail(emval)
{
        var posi = 0;
        var posj = 0;
        var iflg = "false";
        var jflg = "false";
        for(i=0;i<=emval.length;i++)
        {
                if(emval.substr(i, 1) == "\@")
                {
                        posi = i+1;
                        iflg = "true";
                }
                if(emval.substr(i, 1) == ".")
                {
                        posj = i+1;
                        jflg = "true";
                }
        }
        if(posi == "1" || (posi+1) == posj || posj == emval.length || iflg == "false" || jflg == "false")
        {
                return false;
        }
        else
        {
                return true;
        }
}
function IsEmpty(aTextField) {
	act_val = stringTrim(aTextField.value);
	if ((act_val.length==0) ||
   (act_val==null)) {
      return true;
   }
   else { return false; }
}	

function stringTrim(strToTrim) {
	return(strToTrim.replace(/^\s+|\s+$/g, ''));
}


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;
   
 }