function IsNumeric(strString)
   //  check for valid numeric strings	
   {
   var strValidChars = "0123456789-";
   var strChar;
   var blnResult = true;

   if (strString.length == 0) return false;

   //  test strString consists of valid characters listed above
   for (i = 0; i < strString.length && blnResult == true; i++)
      {
      strChar = strString.charAt(i);
      if (strValidChars.indexOf(strChar) == -1)
         {
         blnResult = false;
         }
      }
   return blnResult;
   }
	
	
	function checkText(val,name)
	{	
	var na=name;
	 /*if (val.length == 0) 
      {
      alert("Please enter a value.");
	  return false;
      } 
      else*/ if (IsNumeric(val) == false) 
      {
	  
      alert("Please check - non numeric value!");
	  document.getElementById(na).value="";
	  return false;
	  
      }
	}