function loadPage(url,id) {
	var req = false;
	// code for IE7+, Firefox, Chrome, Opera, Safari
	if (window.XMLHttpRequest) {
		req = new XMLHttpRequest();
	} else if (window.ActiveXObject) {
		// code for IE6, IE5
		req = new ActiveXObject("Microsoft.XMLHTTP");
	}
	var element = document.getElementById(id);
	if (!element) {
		alert("Bad id " + id + "passed to clientSideInclude."
				+ "You need a div or span element "
				+ "with this id in your page.");
		return;
	}
	if (req) {
		// Synchronous request, wait till we have it all
		req.open('GET', url, false);
		req.send(null);
		element.innerHTML = req.responseText;
		element.focus();
		element.blur();
	} else {
		element.innerHTML = "<h1>Do poprawnego działania strony wymagana jest obsługa XMLHTTPRequest</h1>";
	}
}

function sendRegiseterForm(url, content) {
	if (window.XMLHttpRequest) {// code for IE7+, Firefox, Chrome, Opera, Safari
		xmlhttp = new XMLHttpRequest();
	} else if(!xmlhttp) {// code for IE6, IE5
		xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
	} else if(!xmlhttp) 
		alert('Twoja przeglądarka nie jest wspierana!');
	var postData='';
	for(var i=0;i<content.length;i++)
	{
		if(content.elements[i].tagName=='INPUT' || (content.elements[i].tagName=='SELECT' && content.elements[i].value!=''))
			postData=postData + content.elements[i].name + '=' + content.elements[i].value + '&';
		else if(content.elements[i].tagName=='SELECT')
			postData=postData + content.elements[i].name + '=' + content[i][content[i].selectedIndex].value + '&';
	}
	xmlhttp.open('GET', url+"?"+encodeURI(postData));
	xmlhttp.send();
	alert('Dziękujemy za rejestrację!');
}

function validate_email(field) {
	with(field) {
		apos=value.indexOf("@");
		dotpos=value.lastIndexOf(".");
		if (apos<1||dotpos-apos<2) {
			return false;
		}
		else {
			return true;
		}
	}
}

function validate_empty(field) {
	with(field) {
		if(value=='' || value==null)
			return false;
		return true;
	}
}

function validate_dropdown(field) {
	with(field) {
		if(selectedIndex==0)
			return false;
		return true;
	}
}

function validate_form() {
	form=document.getElementById('zgloszenie');
	var wyn=true;
	with(form) {
		if(!validate_email(email))
			wyn=false;
		if(!validate_empty(imie))
			wyn=false;
		if(!validate_empty(nazwisko))
			wyn=false;
		if(!validate_dropdown(korporacja))
			wyn=false;
		if(!validate_dropdown(stan))
			wyn=false;
	}
	if(wyn) {
		document.getElementById('submitButton').disabled=false;
	}
	else 
		document.getElementById('submitButton').disabled=true;
}