function menuPos(elem_arr) {
  if (self.innerWidth)
	{
		bongeszo_szelesseg = self.innerWidth;
	}
	else if (document.documentElement && document.documentElement.clientWidth)
	{
		bongeszo_szelesseg = document.documentElement.clientWidth;
	}
	else if (document.body)
	{
		bongeszo_szelesseg = document.body.clientWidth;
	}

  szelso_savok = (bongeszo_szelesseg - 780) / 2;
  
  leftPos = szelso_savok+2;
  if (self.innerWidth) leftPos = leftPos - 8;
  for (i=0;i<elem_arr.length;i++) {
    menu_name = "menu_" + elem_arr[i];
    menu = document.getElementById(menu_name);
    document.getElementById(menu_name).style.left = leftPos;
    szelesseg = menu.offsetWidth+6;
    if (!self.innerWidth && i==0) szelesseg = 62;
    if (!self.innerWidth && i==1) szelesseg = 76;
    if (!self.innerWidth && i==2) szelesseg = 82;
    if (!self.innerWidth && i==3) szelesseg = 76;
    if (!self.innerWidth && i==4) szelesseg = 61;
    if (!self.innerWidth && i==5) szelesseg = 66;
    if (!self.innerWidth && i==6) szelesseg = 95;
    if (!self.innerWidth && i==7) szelesseg = 98;
    if (!self.innerWidth && i==8) szelesseg = 92;
    if (!self.innerWidth && i==9) szelesseg = 67;
    leftPos = leftPos + szelesseg;
  }
  
}

function aktiv(id) {
  document.getElementById("tart_1").style.display="none";
  document.getElementById("tart_2").style.display="none";
  document.getElementById("tart_3").style.display="none";
  document.getElementById("tart_4").style.display="none";
  
  document.getElementById("ful_1").style.backgroundImage="url('temp/images/quad_ful_passziv.png')";
  document.getElementById("ful_2").style.backgroundImage="url('temp/images/quad_ful_passziv.png')";
  document.getElementById("ful_3").style.backgroundImage="url('temp/images/quad_ful_passziv.png')";
  document.getElementById("ful_4").style.backgroundImage="url('temp/images/quad_ful_passziv.png')";
  
  document.getElementById("ful_1").style.color="white";
  document.getElementById("ful_2").style.color="white";
  document.getElementById("ful_3").style.color="white";
  document.getElementById("ful_4").style.color="white";
  
  document.getElementById("tart_"+id).style.display="block";
  document.getElementById("ful_"+id).style.backgroundImage="url('temp/images/quad_ful_aktiv.png')";
  document.getElementById("ful_"+id).style.color="black";
}