function ajax(){};
	ajax.prototype.iniciar=function(){try { this.xmlhttp=new XMLHttpRequest(); }catch(ee){try{ this.xmlhttp=new ActiveXObject("Msxml2.XMLHTTP");}catch(e){try{this.xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");}catch(E){this.xmlhttp=false;}}}return true;}
	ajax.prototype.responseText=function(){return unescape(this.xmlhttp.responseText.replace(/\+/g," "));}
	ajax.prototype.ocupado=function(){estadoAtual=this.xmlhttp.readyState;return (estadoAtual&&(estadoAtual < 4));}
	ajax.prototype.processa=function(){if (this.xmlhttp.readyState == 4&&this.xmlhttp.status == 200) {return true;}}
	ajax.prototype.enviar=function(url, metodo, modo){if (!this.xmlhttp){this.iniciar();}if (!this.ocupado()){if(metodo == "GET"){this.xmlhttp.open("GET", url, modo);this.xmlhttp.send(null);}else{this.xmlhttp.open("POST", url, modo);this.xmlhttp.setRequestHeader("Content-Type", "application/x-www-form-urlencoded; charset=iso-8859-1");this.xmlhttp.setRequestHeader("Cache-Control", "no-store, no-cache, must-revalidate");this.xmlhttp.setRequestHeader("Cache-Control", "post-check=0, pre-check=0");this.xmlhttp.setRequestHeader("Pragma", "no-cache");this.xmlhttp.send(url);}if (this.processa){return unescape(this.xmlhttp.responseText.replace(/\+/g," "));}}return false;}