var fieldValue;
function change(field){
	fieldValue=document.getElementById(field).value;
	document.getElementById(field).value="";
}
function isBlank(id){
	if(document.getElementById(id).value==""){
		//alert("Va rugam sa completati corect toate campurile!");
		//document.getElementById(id).focus();
		return (true);
		makeFill(document.getElementById(id));
	}
	else
		return (false);
}
function makeFill(field){
	
	if(field.value==""){
		field.value=fieldValue;
		fieldValue="";
	}
}
function isEmail(id){
	if(/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/.test(document.getElementById(id).value)){
		return (true);
	}
	else 
		return (false);
}
function isPhoneNumber(id){
	for (i = 0; i < document.getElementById(id).value.length; i++)
    	{   
        	// Check that current character is number.
        	var c = document.getElementById(id).value.charAt(i);
        	if (((c < "0") || (c > "9"))) return false;
    	}
    	// All characters are numbers.
    	return true;
}
function submitForm(sForm){
	if(isEmail("email") && isPhoneNumber("telephone") && !isBlank("personalContact") && !isBlank("message") && !isBlank("captchaBox")){
          xmlhttpPost("form/captcha.php");
	}
	else 
		alert("Va rugam sa completati corect toate campurile!");
}
function init(){
	document.getElementById("email").value="";
	document.getElementById("personalContact").value="";
	document.getElementById("telephone").value="";
	document.getElementById("message").value="";
	document.getElementById("captchaBox").value="";
}

function xmlhttpPost(strURL) {
    var xmlHttpReq = false;
    var self = this;
    // Mozilla/Safari
    if (window.XMLHttpRequest) {
        self.xmlHttpReq = new XMLHttpRequest();
    }
    // IE
    else if (window.ActiveXObject) {
        self.xmlHttpReq = new ActiveXObject("Microsoft.XMLHTTP");
    }
    self.xmlHttpReq.open('POST', strURL, true);
    self.xmlHttpReq.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
    self.xmlHttpReq.onreadystatechange = function() {
        if (self.xmlHttpReq.readyState == 4) {
            updatepage(self.xmlHttpReq.responseText);
        }
    }
    self.xmlHttpReq.send(getquerystring());
}

function getquerystring() {
    var form     = document.forms['mailForm'];
    var word = document.getElementById("captchaBox").value
    qstr = 'w=' + escape(word);  // NOTE: no '?' before querystring
    return qstr;
}

function updatepage(str){
    if (str=="OK"){
	document.getElementById("mailForm").submit();
	return true;
	}else{
	document.getElementById("verimg").src="form/imagetext.php?"+Math.random();;
    //document.getElementById("result").innerHTML = str;
	alert(str);
	}
}