function makeXmlHttp() {
        var xh = null;
        if(window.XMLHttpRequest)
        {
                xh = new XMLHttpRequest();
        }
        else
        {
                try
                {
                        xh = new ActiveXObject("Microsoft.XMLHTTP");
                }
                catch(e)
                {
                        window.alert("Browser doesnt support XMLHttpRequest object !");
                }
        }
        return xh;
}

function postmailform() {
		var vgaptcha = document.getElementById("Gaptcha").value;
        var vmsgname = document.getElementById("msgname").value;
        var vmsgemail = document.getElementById("msgemail").value;
        var vmsgmessage = document.getElementById("msgmessage").value;
		xmlHttp = makeXmlHttp();

        xmlHttp.onreadystatechange = function()
        {
                
                if ( xmlHttp.readyState == 4 )
                {
                        if ( xmlHttp.status == 200 )
                        {
							    img = document.getElementById('imgCaptcha'); 
							    img.src = 'create_image.php?' + Math.random();
                                if ( xmlHttp.responseText == 'False' )
                                {
                                        document.getElementById("mailresult").innerHTML = '<font color="#009900">Beschikbaar</font>';
                                }
                                else if ( xmlHttp.responseText == 'Nothing' )
                                {
                                        document.getElementById("mailresult").innerHTML = '&nbsp;';
                                }
                                else
                                {
                                        document.getElementById("mailresult").innerHTML = '<font color="#ffffff">' + xmlHttp.responseText + '</font>';
										if ( xmlHttp.responseText.search("sender") != -1 ) {
								        	document.getElementById("msgname").value='';
								        	document.getElementById("msgemail").value='';
								       		document.getElementById("msgmessage").value='';
											}
                                }
                        }
                }
        }
        xmlHttp.open("POST", "email.php?txtGaptcha=" + vgaptcha + "&msgname=" + vmsgname + "&msgemail=" + vmsgemail + "&msgmessage=" + vmsgmessage, true);
        xmlHttp.send('');

}