var xmlHttp;

function adicaoItens(campo1,id){
	var campo2 = document.getElementById(id).value;
	var valor = (campo1) * (campo2);
		
	roundNumber(valor);
		function roundNumber (rnum) {

		   return reais = Math.round(rnum*Math.pow(10,2))/Math.pow(10,2);

		}
	
	obj = document.getElementById('quantSoma'+id);
	obj.innerHTML = 'Total R$ ' + reais;
	
}

	function addItem(id) {
	xmlHttp=GetXmlHttpObject();
	if (xmlHttp==null) {
		alert ("Seu navegador nao suporta AJAX!");
		return;
	}
	
	var excessao = document.getElementById('excessao'+id).value
	var quant = document.getElementById('quant'+id).value
	
	var url="carrinho.php";
	url=url+"?tipo=add";
	url=url+"&id="+id;
	url=url+"&excessao="+excessao;
	url=url+"&quant="+quant;
	url=url+"&sid="+Math.random();
	xmlHttp.onreadystatechange=stateChanged;
	xmlHttp.open("GET",url,true);
	xmlHttp.send(null);

	function stateChanged() {
		if (xmlHttp.readyState==4) {
			document.getElementById("itemCarrinho").innerHTML=xmlHttp.responseText;
		}
	}
}

function excItem(id){
	xmlHttp=GetXmlHttpObject();
	if (xmlHttp==null) {
		alert ("Seu navegador nao suporta AJAX!");
		return;
	}
	
	
	var url="carrinho.php";
	url=url+"?tipo=exc";
	url=url+"&id="+id;
	url=url+"&sid="+Math.random();
	xmlHttp.onreadystatechange=stateChanged;
	xmlHttp.open("GET",url,true);
	xmlHttp.send(null);

	function stateChanged() {
		if (xmlHttp.readyState==4) {
			document.getElementById("itemCarrinho").innerHTML=xmlHttp.responseText;
		}
	}
}

function finalizarCarrinho(id)
{
	ok = confirm("Tem certeza que deseja finalizar ?");
	if (ok) 
	{
		location.href = "../php/controle.php?tipo=finalizarCarrinho";
	}
}

	
function GetXmlHttpObject() {
	var xmlHttp=null;
	try {
		// Firefox, Opera 8.0+, Safari
		xmlHttp=new XMLHttpRequest();
	} catch (e) {
		// Internet Explorer
		try {
			xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
		} catch (e) {
			xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
		}
	}
	return xmlHttp;
}