// funcoes para popup
// req. div blanket


function toggle(div_id) {
	var el = document.getElementById(div_id);
	if ( el.style.display == 'none' ) {	el.style.display = 'block';}
	else {el.style.display = 'none';}
}


function blanket_size(popUpDivVar) {
	if (typeof window.innerWidth != 'undefined') {
		viewportheight = window.innerHeight;
	} else {
		viewportheight = document.documentElement.clientHeight;
	}
	if ((viewportheight > document.body.parentNode.scrollHeight) && (viewportheight > document.body.parentNode.clientHeight)) {
		blanket_height = viewportheight;
	} else {
		if (document.body.parentNode.clientHeight > document.body.parentNode.scrollHeight) {
			blanket_height = document.body.parentNode.clientHeight;
		} else {
			blanket_height = document.body.parentNode.scrollHeight;
		}
	}
	var blanket = document.getElementById('blanket');
	blanket.style.height = blanket_height + 'px';
	var popUpDiv = document.getElementById(popUpDivVar);
	popUpDiv_height=blanket_height/2-150;//150 is half popup's height
	popUpDiv.style.top = popUpDiv_height + 'px';
}
function window_pos(popUpDivVar) {
	if (typeof window.innerWidth != 'undefined') {
		viewportwidth = window.innerHeight;
	} else {
		viewportwidth = document.documentElement.clientHeight;
	}
	if ((viewportwidth > document.body.parentNode.scrollWidth) && (viewportwidth > document.body.parentNode.clientWidth)) {
		window_width = viewportwidth;
	} else {
		if (document.body.parentNode.clientWidth > document.body.parentNode.scrollWidth) {
			window_width = document.body.parentNode.clientWidth;
		} else {
			window_width = document.body.parentNode.scrollWidth;
		}
	}
	var popUpDiv = document.getElementById(popUpDivVar);
	window_width=window_width/2-150;//150 is half popup's width
	popUpDiv.style.left = window_width + 'px';
}
function popup(windowname) {
	blanket_size(windowname);
	window_pos(windowname);
	toggle('blanket');
	toggle(windowname);		
}



function ahah(url,target) {
// native XMLHttpRequest object
document.getElementById(target).innerHTML = 'sending...';
if (window.XMLHttpRequest) {
req = new XMLHttpRequest();
req.onreadystatechange = function() {ahahDone(target);};
req.open("GET", url, true);
req.send(null);
// IE/Windows ActiveX version
} else if (window.ActiveXObject) {
req = new ActiveXObject("Microsoft.XMLHTTP");
if (req) {
req.onreadystatechange = function() {ahahDone(target);};
req.open("GET", url, true);
req.send();
}
}
} 

//Then to receive an AHAH request


function ahahDone(target) {
// only if req is "loaded"
if (req.readyState == 4) {
// only if "OK"
if (req.status == 200) {
results = req.responseText;
document.getElementById(target).innerHTML = results;
} else {
document.getElementById(target).innerHTML="ahah error:n" +
req.statusText;
}
}
} 

function ahahPost(url,target,formid) {

var params = '';
var elem = document.getElementById(formid).elements;

for(var i = 0; i < elem.length; i++) {
if (elem[i].type == "checkbox") {
if (elem[i].checked) {
params += elem[i].name + '=' + elem[i].value + '&';	
}
}
else {
params += elem[i].name + '=' + elem[i].value + '&';
}
}

params = params.slice(0,params.length-1);

document.getElementById(target).innerHTML = 'loading data...';
if (window.XMLHttpRequest) {
req = new XMLHttpRequest();
req.onreadystatechange = function() {ahahDone(target);};
req.open("POST", url, true);
req.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
req.setRequestHeader("Content-length", params.length);
req.setRequestHeader("Connection", "close");
req.send(params);
} else if (window.ActiveXObject) {
req = new ActiveXObject("Microsoft.XMLHTTP");
if (req) {
req.onreadystatechange = function() {ahahDone(target);};
req.open("POST", url, true);
req.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
req.setRequestHeader("Content-length", params.length);
req.setRequestHeader("Connection", "close");
req.send(params);
}
}
} 


//The idea here is to design your <form> as you would any other, with a slight tweak to the action of your form:


//<form method="post" id="yourform" action="javascript:ahahPost('your-url.php', 'targetdiv', 'yourform');">

// usar: <input name='nome' id='nome' type='text' value='Nome' onclick="clickclear(this,'Nome')" onfocus="clickclear(this,'Nome')" onblur="clickrecall(this,'Nome')">
function clickclear(thisfield, defaulttext) {
if (thisfield.value == defaulttext) {
thisfield.value = "";
}
}

function clickrecall(thisfield, defaulttext) {
	//noenter();
	if (thisfield.value == "") {
		thisfield.value = defaulttext;
	}
}

function noenter() {   // para nao deixar usar o enter para submit
  if (window.event.keyCode == 13)
	window.event.keyCode =0;
 }


// email checker
 function echeck(str) {
	
		var at="@"
		var dot="."
		var lat=str.indexOf(at)
		var lstr=str.length
		var ldot=str.indexOf(dot)
		if (str.indexOf(at)==-1){  return false}
		if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){		   return false	}
		if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){	    return false		}
		if (str.indexOf(at,(lat+1))!=-1){		    return false		 }
		if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){		    return false		 }
		if (str.indexOf(dot,(lat+2))==-1){		    return false		 }
		if (str.indexOf(" ")!=-1){		    return false		 }

	
 		return true		
			
}


function e(t) {
	alert(t);
}

 function confirmLink(theLink, theSqlQuery){
	
    var is_confirmed = confirm('Tem a certeza que quer ' + theSqlQuery + ' ?');
    if (is_confirmed) {
       // theLink.href += '&is_js_confirmed=1';
    }

    return is_confirmed;
} // end of the 'confirmLink()' function