try

{

	ajax = new XMLHttpRequest();

}

catch(ee)

{

	try

	{

		ajax = new ActiveXObject("Msxml2.XMLHTTP");

	}

	catch(e)

	{

		try

		{

			ajax = new ActiveXObject("Microsoft.XMLHTTP");

		}

		catch(E)

		{

			ajax = false;

		}

	}

}



function jphp(metodo, url, post, funcao)

{	

	if(metodo == "GET")

	{

		ajax.open("GET", url+'?'+post, true);

		ajax.send(null);

	}

	else

	{

		ajax.open("POST", url, true);

		ajax.setRequestHeader("Content-Type", "application/x-www-form-urlencoded; charset=iso-8859-1");	

		ajax.setRequestHeader("Cache-Control", "no-store, no-cache, must-revalidate");

		ajax.setRequestHeader("Cache-Control", "post-check=0, pre-check=0");

		ajax.setRequestHeader("Pragma", "no-cache");

		ajax.send(post);

	}

	

	ajax.onreadystatechange = function()

	{

		if(ajax.readyState == 4 && ajax.status == 200)

			eval(funcao+"(url_decode(ajax.responseText))");

	}

}



function url_encode(str)

{ 

	var hex_chars = "0123456789ABCDEF"; 

	var noEncode = /^([a-zA-Z0-9\_\-\.])$/; 

	var n, strCode, hex1, hex2, strEncode = ""; 



	for(n = 0; n < str.length; n++)

	{ 

		if (noEncode.test(str.charAt(n)))

		{ 

			strEncode += str.charAt(n); 

		}

		else

		{ 

			strCode = str.charCodeAt(n); 

			hex1 = hex_chars.charAt(Math.floor(strCode / 16)); 

			hex2 = hex_chars.charAt(strCode % 16); 

			strEncode += "%" + (hex1 + hex2); 

		} 

	}

	return strEncode;

} 



function url_decode(str)

{ 

	var n, strCode, strDecode = ""; 



	for (n = 0; n < str.length; n++)

	{ 

		if (str.charAt(n) == "%")

		{ 

			strCode = str.charAt(n + 1) + str.charAt(n + 2); 

			strDecode += String.fromCharCode(parseInt(strCode, 16)); 

			n += 2; 

		}

		else

		{ 

			strDecode += str.charAt(n); 

		} 

	}

	return strDecode; 

}