// posle zpravu pomoci AJAXu do send.php
function sackIt() {
  ajax = new sack("send.php");
 	var form = document.getElementById('komentar_form');
	ajax.setVar("data", form.data.value); 
	ajax.setVar("jmeno", form.jmeno.value);
  ajax.setVar("email", form.email.value); 
  ajax.element = "mypopup";
  ajax.onLoaded = closeIt;
  ajax.runAJAX("send=ok");
}

function closeIt() {
  // setTimeout('document.getElementById("mypopup").style.display = "none";',2000);
}
function closeItNow() {
  document.getElementById("mypopup").style.display = "none";
}

// ukaze dialog
function showComment() {
    // Determine how much the visitor had scrolled
    var scrolledX, scrolledY;
    if( self.pageYOffset ) {
      scrolledX = self.pageXOffset;
      scrolledY = self.pageYOffset;
    } else if( document.documentElement && document.documentElement.scrollTop ) {
      scrolledX = document.documentElement.scrollLeft;
      scrolledY = document.documentElement.scrollTop;
    } else if( document.body ) {
      scrolledX = document.body.scrollLeft;
      scrolledY = document.body.scrollTop;
    }
    
    // Determine the coordinates of the center of the page
    
    var centerX, centerY;
    if( self.innerHeight ) {
      centerX = self.innerWidth;
      centerY = self.innerHeight;
    } else if( document.documentElement && document.documentElement.clientHeight ) {
      centerX = document.documentElement.clientWidth;
      centerY = document.documentElement.clientHeight;
    } else if( document.body ) {
      centerX = document.body.clientWidth;
      centerY = document.body.clientHeight;
    }
  var leftOffset = scrolledX + (centerX - 400) / 2;
  var topOffset = scrolledY + (centerY - 200) / 2;  
  document.getElementById("mypopup").style.top = topOffset + "px";
  document.getElementById("mypopup").style.left = leftOffset + "px";
  document.getElementById("mypopup").style.display = "block";
  document.getElementById("mypopup").innerHTML = "<form name='komentar_form' id='komentar_form'><div align='center'><h3 style='margin-top: 4px'>Zde napiště prosím Váš komentář, názor či kritiku:</h3><textarea name='data' style='width: 390px' cols='70' rows='5' class='forminput'></textarea></div><table><tr><td>Jméno: </td><td><input type='text' name='jmeno' size='50' style='width: 140px' class='forminput'/></td></tr><tr><td>Email: </td><td><input type='text' name='email' size='50' style='width: 140px' class='forminput'/> (pokud si přejete odpověď)</td></tr></table><div align='center'><input type='button' value='Odeslat' style='width: 100px' onclick='sackIt()' class='formsubmit'/>&nbsp; &nbsp;<input type='button' value='Zavřít' style='width: 100px' onclick='closeItNow()' class='formsubmit'/></div></form>";
  document.komentar_form.data.focus();
}