// JavaScript Document

function IsEmpty(aTextField) {
   if ((aTextField.value.length==0) ||
   (aTextField.value==null)) {
      return true;
   }
   else { return false; }
}	

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 isValidEmail(str) {

   return (str.indexOf(".") > 2) && (str.indexOf("@") > 0);
 


}


function NumOnly(val) 
{
var Exp = /[$@#%^&\*\/\[\]\+\-._{}'~| ":;=?!()abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ]/;
		var strPass = val.value;
		var strLength = strPass.length;
		var lchar = val.value.charAt((strLength) - 1);
		//if(lchar.search(Exp) != -1) 
		if(lchar.search(Exp) != -1) 
		{
			var tst = val.value.substring(0, (strLength) - 1);
			val.value = tst;
		}
}