var LinkButtonImg = new Array(8);
var EnumImg = new Array(3);

for (i=0 ; i<8 ; i++) {
  LinkButtonImg[i] = new Image();
}

LinkButtonImg[0].src = siteurl + "start/orgoff.jpg";
LinkButtonImg[1].src = siteurl + "start/orgon.jpg";
LinkButtonImg[2].src = siteurl + "start/downloff.jpg";
LinkButtonImg[3].src = siteurl + "start/downlon.jpg";
LinkButtonImg[4].src = siteurl + "start/lehreroff.jpg";
LinkButtonImg[5].src = siteurl + "start/lehreron.jpg";
LinkButtonImg[6].src = siteurl + "start/kontaktoff.jpg";
LinkButtonImg[7].src = siteurl + "start/kontakton.jpg";


for (i=0 ; i<3 ; i++) {
  EnumImg[i] = new Image();
}

EnumImg[0].src = siteurl + "start/enumgr.gif";
EnumImg[1].src = siteurl + "start/enumor.gif";
EnumImg[2].src = siteurl + "start/enumbl.gif";


function changediv(button,pic,numbut) {

    var mynum;
    if(pic == "on") { mynum = 1; }
	else { mynum = 0; }
	for (i=0 ; i<button; i++) { mynum = mynum + 2; }

    if(pic == "on") {
	   if(button % 2 == 0) {
	      eval("document.getElementById('div" + button + "')").className = "orback";
		  eval("document.getElementById('headl" + button + "')").className = "orhead";
		  for (j=0; j<numbut; j++) {
		     eval("document.getElementById('but" + button + j + "')").className = "orbut";
			 eval("document.getElementById('enum" + button + j + "')").src = EnumImg[1].src;
		  }
		  eval("document.getElementById('img" + button + "')").className = "orboarder";
	   }
	   else {
	      eval("document.getElementById('div" + button + "')").className = "blback";
		  eval("document.getElementById('headl" + button + "')").className = "blhead";
		  for (j=0; j<numbut; j++) {
		     eval("document.getElementById('but" + button + j + "')").className = "blbut";
			 eval("document.getElementById('enum" + button + j + "')").src = EnumImg[2].src;
		  }
		  eval("document.getElementById('img" + button + "')").className = "blboarder";
	   }
	   eval("document.getElementById('img" + button + "')").src = LinkButtonImg[mynum].src;
	}
	else {
	   eval("document.getElementById('div" + button + "')").className = "grback";
	   eval("document.getElementById('headl" + button + "')").className = "grhead";
	   eval("document.getElementById('img" + button + "')").src = LinkButtonImg[mynum].src;
	   for (j=0; j<numbut; j++) {
	      eval("document.getElementById('but" + button + j + "')").className = "grbut";
		  eval("document.getElementById('enum" + button + j + "')").src = EnumImg[0].src;
	   }
	   eval("document.getElementById('img" + button + "')").className = "grboarder";
	}

}

function changebut(buttonx,buttony,pic) {

   if(pic == "on") {
      if(buttonx % 2 == 0) {
         eval("document.getElementById('butref" + buttonx + buttony + "')").className = "orbuton";
      }
	  else {
         eval("document.getElementById('butref" + buttonx + buttony + "')").className = "blbuton";
	  }
   }
   else {
      eval("document.getElementById('butref" + buttonx + buttony + "')").className = "butoff";
   }
}