if (document.images) 

{ 
button_1_on=new Image;
button_1_on.src="img/home_up.gif";
button_1_off=new Image;
button_1_off.src="img/home.gif";

button_2_on=new Image;
button_2_on.src="img/alacarte_up.gif";
button_2_off=new Image;
button_2_off.src="img/alacarte.gif";

button_3_on=new Image;
button_3_on.src="img/lunch_up.gif";
button_3_off=new Image;
button_3_off.src="img/lunch.gif";

button_4_on=new Image;
button_4_on.src="img/bar_up.gif";
button_4_off=new Image;
button_4_off.src="img/bar.gif";

button_5_on=new Image;
button_5_on.src="img/livemusik_up.gif";
button_5_off=new Image;
button_5_off.src="img/livemusik.gif";

button_6_on=new Image;
button_6_on.src="img/casino_up.gif";
button_6_off=new Image;
button_6_off.src="img/casino.gif";

button_7_on=new Image;
button_7_on.src="img/gastbok_up.gif";
button_7_off=new Image;
button_7_off.src="img/gastbok.gif";

button_8_on=new Image;
button_8_on.src="img/pil_aktiv.gif";
button_8_off=new Image;
button_8_off.src="img/pil.gif";

button_9_on=new Image;
button_9_on.src="img/pil_aktiv.gif";
button_9_off=new Image;
button_9_off.src="img/pil.gif";

button_10_on=new Image;
button_10_on.src="img/pil_aktiv.gif";
button_10_off=new Image;
button_10_off.src="img/pil.gif";

button_11_on=new Image;
button_11_on.src="img/pil_aktiv.gif";
button_11_off=new Image;
button_11_off.src="img/pil.gif";

button_12_on=new Image;
button_12_on.src="img/pil_aktiv.gif";
button_12_off=new Image;
button_12_off.src="img/pil.gif";

button_13_on=new Image;
button_13_on.src="img/pil_aktiv.gif";
button_13_off=new Image;
button_13_off.src="img/pil.gif";

button_14_on=new Image;
button_14_on.src="img/pil_aktiv.gif";
button_14_off=new Image;
button_14_off.src="img/pil.gif";

button_15_on=new Image;
button_15_on.src="img/pil_aktiv.gif";
button_15_off=new Image;
button_15_off.src="img/pil.gif";

button_16_on=new Image;
button_16_on.src="img/pil_aktiv.gif";
button_16_off=new Image;
button_16_off.src="img/pil.gif";

button_17_on=new Image;
button_17_on.src="img/pil_aktiv.gif";
button_17_off=new Image;
button_17_off.src="img/pil.gif";

button_18_on=new Image;
button_18_on.src="img/pil_aktiv.gif";
button_18_off=new Image;
button_18_off.src="img/pil.gif";

button_19_on=new Image;
button_19_on.src="img/pil_aktiv.gif";
button_19_off=new Image;
button_19_off.src="img/pil.gif";

}

function rollIn(imgName)

{
if (document.images)
{

document[imgName].src=eval(imgName + "on.src");
}
}

function rollOut(imgName)

{
if (document.images)
{

document[imgName].src=eval(imgName + "off.src");

}
}