/* funções:
	 criar_ajax() -> cria um objeto ajax 
*/

var Base64 = {
 
	// private property
	_keyStr : "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=",
 
	// public method for encoding
	encode : function (input) {
		var output = "";
		var chr1, chr2, chr3, enc1, enc2, enc3, enc4;
		var i = 0;
 
		input = Base64._utf8_encode(input);
 
		while (i < input.length) {
 
			chr1 = input.charCodeAt(i++);
			chr2 = input.charCodeAt(i++);
			chr3 = input.charCodeAt(i++);
 
			enc1 = chr1 >> 2;
			enc2 = ((chr1 & 3) << 4) | (chr2 >> 4);
			enc3 = ((chr2 & 15) << 2) | (chr3 >> 6);
			enc4 = chr3 & 63;
 
			if (isNaN(chr2)) {
				enc3 = enc4 = 64;
			} else if (isNaN(chr3)) {
				enc4 = 64;
			}
 
			output = output +
			this._keyStr.charAt(enc1) + this._keyStr.charAt(enc2) +
			this._keyStr.charAt(enc3) + this._keyStr.charAt(enc4);
 
		}
 
		return output;
	},
 
	// public method for decoding
	decode : function (input) {
		var output = "";
		var chr1, chr2, chr3;
		var enc1, enc2, enc3, enc4;
		var i = 0;
 
		input = input.replace(/[^A-Za-z0-9\+\/\=]/g, "");
 
		while (i < input.length) {
 
			enc1 = this._keyStr.indexOf(input.charAt(i++));
			enc2 = this._keyStr.indexOf(input.charAt(i++));
			enc3 = this._keyStr.indexOf(input.charAt(i++));
			enc4 = this._keyStr.indexOf(input.charAt(i++));
 
			chr1 = (enc1 << 2) | (enc2 >> 4);
			chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);
			chr3 = ((enc3 & 3) << 6) | enc4;
 
			output = output + String.fromCharCode(chr1);
 
			if (enc3 != 64) {
				output = output + String.fromCharCode(chr2);
			}
			if (enc4 != 64) {
				output = output + String.fromCharCode(chr3);
			}
 
		}
 
		output = Base64._utf8_decode(output);
 
		return output;
 
	},
 
	// private method for UTF-8 encoding
	_utf8_encode : function (string) {
		string = string.replace(/\r\n/g,"\n");
		var utftext = "";
 
		for (var n = 0; n < string.length; n++) {
 
			var c = string.charCodeAt(n);
 
			if (c < 128) {
				utftext += String.fromCharCode(c);
			}
			else if((c > 127) && (c < 2048)) {
				utftext += String.fromCharCode((c >> 6) | 192);
				utftext += String.fromCharCode((c & 63) | 128);
			}
			else {
				utftext += String.fromCharCode((c >> 12) | 224);
				utftext += String.fromCharCode(((c >> 6) & 63) | 128);
				utftext += String.fromCharCode((c & 63) | 128);
			}
 
		}
 
		return utftext;
	},
 
	// private method for UTF-8 decoding
	_utf8_decode : function (utftext) {
		var string = "";
		var i = 0;
		var c = c1 = c2 = 0;
 
		while ( i < utftext.length ) {
 
			c = utftext.charCodeAt(i);
 
			if (c < 128) {
				string += String.fromCharCode(c);
				i++;
			}
			else if((c > 191) && (c < 224)) {
				c2 = utftext.charCodeAt(i+1);
				string += String.fromCharCode(((c & 31) << 6) | (c2 & 63));
				i += 2;
			}
			else {
				c2 = utftext.charCodeAt(i+1);
				c3 = utftext.charCodeAt(i+2);
				string += String.fromCharCode(((c & 15) << 12) | ((c2 & 63) << 6) | (c3 & 63));
				i += 3;
			}
 
		}
 
		return string;
	}
 
}


function reverseColor(obj,cor){
	obj.style.background = cor;
}

function showHide(objTabela, objCelula, corNormal, corSobre){
	var objTabelaAtual = objTabela.style.display;
	if(objTabelaAtual=='none'){
		objTabela.style.display = 'inline';
		reverseColor(objCelula,corSobre);
	}else{
		objTabela.style.display = 'none';
		reverseColor(objCelula,corNormal);
	}
}

function criar_ajax() {
	try {
	 	ajax1 = new ActiveXObject("Microsoft.XMLHTTP");
	} catch(e) {
	 	try {
	  		ajax1 = new ActiveXObject("Msxml2.XMLHTTP");
		} catch(ex) {
	  		try {
			   ajax1 = new XMLHttpRequest();
	  		} catch(exc) {
			    alert("Esse browser não tem recursos para uso do Ajax");
	   			ajax1 = null;
	  		}
		}
	}
	return ajax1;
}



function ajax_preenche_div(pagina,objDiv,parametros){
	req = criar_ajax();
	req.onreadystatechange = function(){
		if(req.readyState == 4){
			objDiv.innerHTML = req.responseText;
		}
	}
	req.open("POST",pagina,true);
	req.setRequestHeader("Content-Type","application/x-www-form-urlencoded");
	req.send(parametros);
}


function evento(obj){
	document.getElementById('div'+obj).style.display = "block";
	document.getElementById('nav'+obj).style.display = "block";
	for(y=1; y<3; y++)
		if(y != obj){
	  		document.getElementById('div'+y).style.display = "none";
			document.getElementById('nav'+y).style.display = "none";
		}
}

var _str = "";
var _timeout = 0;

function cbboxSearch(sel, e) {
    var i=0, c=true;
    _str = _str + String.fromCharCode(e.keyCode);
    _str = _str.toLowerCase();
    while (c) {
        var textOpt = sel.options[i].text.toLowerCase();
        var strOpt = textOpt.substr(0, (_str.length));
        if (strOpt == _str) {
            sel.options[i].selected = true;
            c = false;
        }
        if (i >= (sel.options.length - 1)) {
            c = false;
        }
        i++;
    }
    clearTimeout(_timeout);
    _timeout = setTimeout("cbboxSearchRestart()", 500);
}

function cbboxSearchRestart() {
    clearTimeout(_timeout);
    _str = "";
}

function hex2dec(hex) {
    var hex_chars = "0123456789ABCDEF";
    
    var n1 = hex.charAt(0).toUpperCase();
    var n2 = hex.charAt(1).toUpperCase();
    
    var n1 = hex_chars.indexOf(n1) * 16;
    var n2 = hex_chars.indexOf(n2);
    
    return  n1 + n2;
}

function dec2asc(dec){
	var symbols = " !\"#$%&'()*+,-./0123456789:;<=>?@";
	var loAZ = "abcdefghijklmnopqrstuvwxyz";
	var acent= "àáâã---çèéê-ìí----òóôõ---ùú";
 	symbols+= loAZ.toUpperCase();
 	symbols+= "[\\]^_`";
 	symbols+= loAZ;
 	symbols+= "{|}~";
	symbols+= "-------------------------------------------------°---------º-----";
	symbols+= acent.toUpperCase();
	symbols+= "-----";
	symbols+= acent;
	return symbols.charAt(dec-32);
}

function buscarData(e, campo){
	var key = (e.keyCode?e.keyCode:e.charCode);
	if (key == 104 || key == 72) {
		 try {
			 var data 	= new Date();
			 var dia 	= (data.getDate() < 10) ? "0"+(data.getDate()) : data.getDate() ;
			 var mes 	= (data.getMonth() < 9) ? "0"+(data.getMonth()+1) : data.getMonth()+1;
			 data = dia+"/"+mes+"/"+data.getFullYear();
			 campo.value = data;
		}catch(e){}
	}
}