var buttonids=new Array();
	
	buttonids[0]="button01";
	buttonids[1]="button02";
	buttonids[2]="button03";
	buttonids[3]="button04";
	buttonids[4]="button05";
	buttonids[5]="button06";
		
	
	var buttonimgs=new Array();
	var buttonimgs_over=new Array();
	
	buttonimgs[0]="images/btn_01.gif";
	buttonimgs[1]="images/btn_02.gif";
	buttonimgs[2]="images/btn_03.gif";
	buttonimgs[3]="images/btn_08.gif";
	buttonimgs[4]="images/btn_05.gif";
	buttonimgs[5]="images/btn_06.gif";
	
	buttonimgs_over[0]="images/btn_01_over.gif";
	buttonimgs_over[1]="images/btn_02_over.gif";
	buttonimgs_over[2]="images/btn_03_over.gif";
	buttonimgs_over[3]="images/btn_08_over.gif";
	buttonimgs_over[4]="images/btn_05_over.gif";
	buttonimgs_over[5]="images/btn_06_over.gif";
	
	
	function setAllClear(){
		setHighlighted(-1);
	}
	function setHighlighted(idx){
		for(var i=0;i<buttonids.length;i++){
			var btnimg=document.getElementById(buttonids[i]);
			if(btnimg&&btnimg.nodeType&&btnimg.nodeType==1&&(btnimg.tagName.toLowerCase()=="img"
                        || btnimg.tagName.toLowerCase()=="input")){
				if(i==idx){
					btnimg.src=buttonimgs_over[i];
				}else{
					btnimg.src=buttonimgs[i];
				}
			}
		}
	}