var xmlHttp;


function createXMLHttpRequest() {
    if (window.ActiveXObject) {
        xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
    }
    else if (window.XMLHttpRequest) {
        xmlHttp = new XMLHttpRequest();
    }
}
function startRequest(email, pwd,lang)  
{
    createXMLHttpRequest();
    xmlHttp.open("GET", "/HttpHandlers/IsEmailExist.ashx?email=" + email + "&avpwd=" + pwd + "&avlang=" + lang, false);
    xmlHttp.send(null);
    return xmlHttp.responseText;
}


function isIE7() {

    var rv = -1; // Return value assumes failure.

    if (navigator.appName == 'Microsoft Internet Explorer') {

        var ua = navigator.userAgent;

        var re = new RegExp("MSIE ([0-9]{1,}[\.0-9]{0,})");

        if (re.exec(ua) != null) {

            rv = parseFloat(RegExp.$1);            
        }
    }  
    var browser = navigator.appName;
    var b_version = navigator.appVersion;
    var version = parseFloat(b_version);
    if (browser == "Microsoft Internet Explorer" && rv<8 ) {
        return true;
    }
    else {
        return false;
    }   
}

function selectPositionFix() {
    if (!isIE7()) {
        return;
    }
    var selects = document.getElementsByTagName('select');

    for (var i = 0; i < selects.length; i++)
    {        
        selects[i].style.marginLeft = "6px";
    }
}