if (document.images) {

	  var button1_up = new Image();
	  button1_up.src = './img/main/cz_off.gif';

	  var button1_over = new Image();
	  button1_over.src = './img/main/cz_on.gif';

	  var button2_up = new Image();
	  button2_up.src = './img/main/en_off.gif';

	  var button2_over = new Image();
	  button2_over.src = './img/main/en_on.gif';

	  var button3_up = new Image();
	  button3_up.src = './img/main/de_off.gif';

	  var button3_over = new Image();
	  button3_over.src = './img/main/de_on.gif';

	  var button4_up = new Image();
	  button4_up.src = './img/main/sp_off.gif';

	  var button4_over = new Image();
	  button4_over.src = './img/main/sp_on.gif';


	  var button5_up = new Image();
	  button5_up.src = './img/main/enter_09.gif';

	  var button5_over = new Image();
	  button5_over.src = './img/main/enter_12.gif';

	  var button6_up = new Image();
	  button6_up.src = './img/main/enter_15.gif';

	  var button6_over = new Image();
	  button6_over.src = './img/main/enter_17.gif';

	  var button7_up = new Image();
	  button7_up.src = './img/main/enter_20.gif';

	  var button7_over = new Image();
	  button7_over.src = './img/main/enter_23.gif';

	  var button8_up = new Image();
	  button8_up.src = './img/main/enter_26.gif';

	  var button8_over = new Image();
	  button8_over.src = './img/main/enter_28.gif';


	  function over_button1() {
	    if (document.images) {
	      document["cz"].src = button1_over.src
	    }
	  }

	  function up_button1() {
	    if (document.images) {
	      document["cz"].src = button1_up.src
	    }
	  }

	  function over_button2() {
	    if (document.images) {
	      document["en"].src = button2_over.src
	    }
	  }

	  function up_button2() {
	    if (document.images) {
	      document["en"].src = button2_up.src
	    }
	  }

	  function over_button3() {
	    if (document.images) {
	      document["de"].src = button3_over.src
	    }
	  }

 	  function up_button3() {
	    if (document.images) {
	      document["de"].src = button3_up.src
	    }
	  }

	  function over_button4(name) {
	    if (document.images) {
	      document['sp'].src = button4_over.src
	    }
	  }

	  function up_button4(name) {
	    if (document.images) {
	      document['sp'].src = button4_up.src
	    }
	  }

	  function over_button5() {
	    if (document.images) {
	      document["vstup"].src = button5_over.src
	    }
	  }

	  function up_button5() {
	    if (document.images) {
	      document["vstup"].src = button5_up.src
	    }
	  }

	  function over_button6() {
	    if (document.images) {
	      document["herein"].src = button6_over.src
	    }
	  }

	  function up_button6() {
	    if (document.images) {
	      document["herein"].src = button6_up.src
	    }
	  }

	  function over_button7() {
	    if (document.images) {
	      document["entrar"].src = button7_over.src
	    }
	  }

 	  function up_button7() {
	    if (document.images) {
	      document["entrar"].src = button7_up.src
	    }
	  }

	  function over_button8() {
	    if (document.images) {
	      document['enter'].src = button8_over.src
	    }
	  }

	  function up_button8() {
	    if (document.images) {
	      document['enter'].src = button8_up.src
	    }
	  }
	}