function searchspecialcha(field) 
{
	var valid = "~'>%+;[]<{}"
	var ok = "no";
	var temp;
		for (var i=0; i<field.length; i++) 
			{
				temp = "" + field.substring(i, i+1);
				if (valid.indexOf(temp) >= 0) ok = "yes"; 
			}
		if (ok == "no") 
			{ return true; } 
		else
			{ return false; }
}