function stripCharsNotInBag(Obj)
{
    var i;
    var s = Obj;
    var bag = "QWERTYUIOPASDFGHJKLZXCVBNMqwertyuiopasdfghjklzxcvbnm "	
//     Search through string's characters one by one.
//     If character is in bag, append to returnString.
//     alert(s);
    for (i = 0; i < s.length; i++)
    {   
//         Check that current character isn't whitespace.
        var c = s.charAt(i);
        if (bag.indexOf(c) == -1) 
	 {
		return false;	
 	 }
   }
   return true;
}
function isBlank(s)
{
	for(var i=0; i < s.length;i++)
	{
		var c = s.charAt(i);
		if((c!=' ') &&(c !='\n') && (c!='\t'))
			return false;
	}
	return true;
}

function calling()
{
	if(isBlank(document.search.textfield.value))
	{
		alert("Enter a Search Value");
			
	}
	else
	{

		if (!stripCharsNotInBag(document.search.textfield.value))
		{ 
			alert("\nPlease use only A-Z, a-z in Search String \n And separate the words with spaces\n");
	
		}
		else
		{
			document.forms[0].action="CFetchValues";
			document.forms[0].submit();
		}
	}
					
}