function overForm_diskuze()

    {
		var ok=true;
		var ok2=true;
		var ok3=true;
	 	if(document.getElementById("questbook_name").value.length <= 0) ok=false;
		if(document.getElementById("questbook_text").value.length <= 0) ok2=false;
		if(document.getElementById("questbook_email").value.length > 0)
		{
        	re = new RegExp("^[_a-z0-9-]+(\.[_a-z0-9-]+)*@[a-z0-9-]+(\.[a-z0-9-]+)*(\.[a-z]{2,3})$");
        	if(!re.test(document.getElementById("questbook_email").value)) ok3=false;
		}
		if(ok)
		{
			if(ok2)
			{
				if(ok3)
				{
				document.getElementById("formular").submit();
				}
				else
				{
					alert("Špatný e-mail.");
				}
			}
			else
			{
				alert("Musíte napsat text.");
			}
		}
		else
		{
			alert("Musíte napsat jméno.");
		}
	}

function overForm_diskuze_en()
    {
        var ok=true;
		var ok2=true;
		var ok3=true;
        if(document.getElementById("questbook_name").value.length <= 0) ok=false;
		if(document.getElementById("questbook_text").value.length <= 0) ok2=false;
        if(document.getElementById("questbook_email").value.length > 0)
		{
        	re = new RegExp("^[_a-z0-9-]+(\.[_a-z0-9-]+)*@[a-z0-9-]+(\.[a-z0-9-]+)*(\.[a-z]{2,3})$");
        	if(!re.test(document.getElementById("questbook_email").value)) ok3=false;
		}

		if(ok2)
		{
        	if(ok)
			{
				if(ok3)
				{
				document.getElementById("formular").submit();
				}
				else
				{
					alert("Wrong e-mail.");
				}
			}
			else
			{
				alert("Empty name.");
			}
		}
		else
        {
            alert("Empty text.");
        }
    }
	
function popUp(strURL,strType,strWidth,strHeight) {
    var strOptions = "";
    if (strType=="console") {
        strOptions="resizable,width="+strWidth+",height="+strHeight;
    }
    if (strType=="fixed") {
        strOptions="status,width="+strWidth+",height="+strHeight;
    }
    if (strType=="elastic") {
        strOptions="toolbar,menubar,scrollbars,resizable,location";
    }
    window.open(strURL, 'newWin', strOptions);
}