if(document.images){

	bt1=new Image
	bt1_b=new Image
	bt1.src="images/meniu/bt1.gif";
	bt1_b.src="images/meniu/bt1_b.gif";
	
	bt2=new Image
	bt2_b=new Image
	bt2.src="images/meniu/bt2.gif";
	bt2_b.src="images/meniu/bt2_b.gif";
	
	bt3=new Image
	bt3_b=new Image
	bt3.src="images/meniu/bt3.gif";
	bt3_b.src="images/meniu/bt3_b.gif";
	
	bt4=new Image
	bt4_b=new Image
	bt4.src="images/meniu/bt4.gif";
	bt4_b.src="images/meniu/bt4_b.gif";
	
	bt5=new Image
	bt5_b=new Image
	bt5.src="images/meniu/bt5.gif";
	bt5_b.src="images/meniu/bt5_b.gif";
	
	bt6=new Image
	bt6_b=new Image
	bt6.src="images/meniu/bt6.gif";
	bt6_b.src="images/meniu/bt6_b.gif";
	
	bt7=new Image
	bt7_b=new Image
	bt7.src="images/meniu/bt7.gif";
	bt7_b.src="images/meniu/bt7_b.gif";
	
	bt8=new Image
	bt8_b=new Image
	bt8.src="images/meniu/bt8.gif";
	bt8_b.src="images/meniu/bt8_b.gif";
	
	bt9=new Image
	bt9_b=new Image
	bt9.src="images/meniu/bt9.gif";
	bt9_b.src="images/meniu/bt9_b.gif";

} else {
	
	bt1='';
	bt1_b='';
	document.bt1='';
	bt2='';
	bt2_b='';
	document.bt2='';
	bt3='';
	bt3_b='';
	document.bt3='';
	bt4='';
	bt4_b='';
	document.bt4='';
	bt5='';
	bt5_b='';
	document.bt5='';
	bt6='';
	bt6_b='';
	document.bt6='';
	bt7='';
	bt7_b='';
	document.bt7='';
	bt8='';
	bt8_b='';
	document.bt8='';
	bt9='';
	bt9_b='';
	document.bt9='';
}

function onBtOver(nr){
	document["but"+nr].src=this["bt"+nr+"_b"].src;
}
function onBtOut(nr){
	document["but"+nr].src=this["bt"+nr].src;
}