<SCRIPT LANGUAGE="javascript">
// This is a validate function for special characters.
			 function validateSpChar(val)
				  {
						 var index = 0;
						 var len = val.length;
						 var result = true;
						 for (index=0; index < len; index++)
							  {
									 if ((val.charAt(index)=="`") || (val.charAt(index)==" ") ||(val.charAt(index)=="~") || (val.charAt(index)=="!") ||(val.charAt(index)=="@") || (val.charAt(index)=="#") ||(val.charAt(index)=="$") || (val.charAt(index)=="%") ||(val.charAt(index)=="^") || (val.charAt(index)=="&") || (val.charAt(index)=="*") || (val.charAt(index)=="(") || (val.charAt(index)==")") || (val.charAt(index)=="-") || (val.charAt(index)=="[") || (val.charAt(index)=="]") || (val.charAt(index)=="=") || (val.charAt(index)=="{") || (val.charAt(index)=="}") || (val.charAt(index)=="+") || (val.charAt(index)==".") || (val.charAt(index)==",") || (val.charAt(index)=="/") ||(val.charAt(index)=="<") || (val.charAt(index)==">") || (val.charAt(index)=="?") || (val.charAt(index)=="'") || (val.charAt(index)==":") || (val.charAt(index)==";") || (val.charAt(index)=="\\") || (val.charAt(index)=="\\"))
									 {
									  result = false;
									  break;
									 }
							  }
						 return result;
				  }
		// This is for Get focus When the Page is Loaded.
			function getFocus()
			 {
					 document.loginpage.loginname.focus();
			 }
   // This is for Login.
   function login()
	   {
	   if (!(validateSpChar(document.all("loginname").value)))
		 {
			alert("Invalid login Name   \nPlease Re-Enter It.");
	  document.all("TableName").select();
	  }
	   else if (document.all("loginname").value == "")
			{
			alert ("The login Name Is Required \nPlease Enter It.");
			document.all("loginname").select();
			}
	   else if (document.all("password").value == "")
			{
			alert ("The Password‎ Is Required \nPlease Enter It.");
			document.all("loginname").select();
			}
	   else	
			{
			document.loginpage.action= "login_action.asp";
			document.loginpage.submit();
			}
		}
	  </SCRIPT>