// 17.02.2011

var scrh, scrw;
var on = 0;
var hmin = 490;
var timerid = 0;
var grpt;
pt = new Array(6);
for (i=0; i<6; i++)
{ pt[i] = new Array(5); }
pt[1][0] = 1;
pt[1][1] = 2;
pt[1][2] = 1;
pt[2][0] = 1;
pt[2][1] = 2;
pt[2][2] = 3;
pt[2][3] = 4;
pt[2][4] = 1;
pt[3][0] = 1;
pt[3][1] = 2;
pt[3][2] = 3;
pt[3][3] = 1;
pt[4][0] = 1;
pt[4][1] = 2;
pt[4][2] = 3;
pt[4][3] = 4;
pt[4][4] = 1;

function schieben()
{ if (self.innerHeight) 
  { scrh = self.innerHeight;
    scrw = self.innerWidth;
  }
  else if (document.documentElement && document.documentElement.clientHeight)
  { scrh = document.documentElement.clientHeight;
    scrw = document.documentElement.clientWidth;
  }
  else if (document.body)
  { scrh = document.body.clientHeight;
    scrw = document.body.clientWidth;
  }
  if ( ak = document.getElementById("aktuell") ) 
  { if ( scrw < 1000 )
  	{ ak.style.left = "0px"; }
	else
  	{ l = (scrw - 1000) / 2;
	  ak.style.left = l + "px"; 
	}
  	if ( scrh < 730 )
  	{ ak.style.top = "0px"; }
	else
  	{ ak.style.top = "50px"; }
  }
  scrh = scrh - 190;
  hmitte = Math.max(scrh, hmin);
  document.getElementById("mitte").style.height = hmitte + "px";
  if ( obj = document.getElementById("sp1") ) 
  { obj.style.height = hmitte + "px"; }
  if ( obj = document.getElementById("sp2") ) 
  { obj.style.height = hmitte + "px"; }
  if ( obj = document.getElementById("sp3") ) 
  { obj.style.height = hmitte + "px"; }
  hmittek = hmitte - 100;
  if ( obj = document.getElementById("sp1k") ) 
  { obj.style.height = hmittek + "px"; }
  if ( obj = document.getElementById("sp2k") ) 
  { obj.style.height = hmittek + "px"; }
  if ( obj = document.images["gross"] )
  { obj.style.left = (scrw/2 - 180) + "px"; }
  if ( obj = document.images[2] )
  { obj.style.visibility = 'visible'; }
  if ( obj = document.images[6] )
  { obj.style.visibility = 'visible'; }
  if ( obj = document.images[9] )
  { obj.style.visibility = 'visible'; }
}

function initprax()
{ schieben();
  starttimo();
}

function hlon(was) {
  was.style.background='#c0e0ff';
}

function hloff(was) {
  was.style.background='#f0fcff';
}

function zeigs(was)
{ document.getElementById(was).style.visibility='visible';
  on = 1;
}

function weg()
{ if (on == 0)
  { document.getElementById('aktuell').style.visibility='hidden'; 
  	document.getElementById('einladung').style.visibility='hidden';
  }
  on = 0;
}

function zeigen(pic)
{ img = document.images["gross"];
  img.src = document.images[pic].src
  img.style.visibility="visible";
}

function halten()
{ document.images["gross"].style.visibility="visible";
}

function verstecken()
{ document.images["gross"].style.visibility="hidden";
}

function dick(was)
{ obj = document.getElementById(was);
  obj.style.fontWeight = "bold";
  obj.style.color = "#4050ff";
}

function normal(was)
{ 
  obj.style.fontWeight = "normal";
  obj.style.color = "#000000";
}

function starttimo()
{ grpt = 1;
  timerid = setInterval(timo, 2000);
}

function timo()
{ 
  grpt++;
  if (grpt > 4)
  { grpt = 1; }
  x = pt[grpt][0];
  y = pt[grpt][x];
  pt[grpt][0] = y;
  if ( grpt == 1 )
  { if ( y == 1 ) 
    { document.getElementById("tx11").style.visibility = "visible";
	  document.getElementById("tx12").style.visibility = "hidden";
	}
	else
    { document.getElementById("tx12").style.visibility = "visible";
	  document.getElementById("tx11").style.visibility = "hidden";
	}
  }
  name = "praxgr" + grpt;
  source = "pics/" + name + y + ".jpg";
  document.images[name].src = source;
}