// JavaScript Document
function getHTTPObject() {
	var req;
	req = false;
	// branch for native XMLHttpRequest object
	if(window.XMLHttpRequest) {
		try {
			req = new XMLHttpRequest();
		} catch(e) {
			req = false;
		}
	// branch for IE/Windows ActiveX version
	} else if(window.ActiveXObject) {
		try {
			req = new ActiveXObject("Msxml2.XMLHTTP");
		} catch(e) {
			try {
				req = new ActiveXObject("Microsoft.XMLHTTP");
			} catch(e) {
				req = false;
			}
		}
	}
	return req;
}
var req = getHTTPObject();

function convertTextToHTML(s) {
	s = s.replace(/\&/g, "&amp;").replace(/</g, "&lt;").replace(/>/g, "&gt;").replace(/\n/g, "<br />").replace(/  /g, "&nbsp; ");
	return s;
}

function ValidarEnquete()
{
	ss_enquete_existe 	= document.getElementById("ss_enquete_existe").value;
	if(ss_enquete_existe == "1")
	{
			alert("Você já votou nesta enquete!");	
			return false;
	}
	else
	{
		total_enquete 	= document.getElementById("total_enquete").value;
		alternativa 	= 0;
		enquete_id 		= document.getElementById("enquete_id").value;
		
		for(x=1; x<=total_enquete; x++)
		{
			if(document.getElementById("alternativa_"+x).checked == true)
			{
				alternativa = document.getElementById("alternativa_"+x).value;
			}
			
		}
		
		if(alternativa == 0)
		{
			alert("Informe uma alternativa.");	
			return false;
		}
		else
		{	
			req.open("POST", "enquete_send.php?id="+enquete_id+"&alternativa="+alternativa, true);
			req.onreadystatechange = function() 
			{
				if(req.readyState == 4) 
				{
					var html = req.responseText
					var lista = document.getElementById("html_enquete")
					lista.innerHTML = html;			
				}
			};
				
			
			req.setRequestHeader('Content-Type', 'text/html; charset=iso-8859-1');
			req.send("");
		}
	}
	return false;

}