var buttonids=new Array();
	
	buttonids[0]="button01";
	buttonids[1]="button02";
	buttonids[2]="button03";
	buttonids[3]="button04";
	buttonids[4]="button05";
	buttonids[5]="button06";
	buttonids[6]="button07";
	buttonids[7]="button08";
	buttonids[8]="button09";
		
	
	var buttonimgs=new Array();
	var buttonimgs_over=new Array();
	
	buttonimgs[0]="images/btn_nav_main_01.gif";
	buttonimgs[1]="images/btn_nav_main_02.gif";
	buttonimgs[2]="images/btn_nav_main_03.gif";
	buttonimgs[3]="images/btn_nav_main_04.gif";
	buttonimgs[4]="images/btn_nav_main_05.gif";
	buttonimgs[5]="images/btn_nav_main_06.gif";
	buttonimgs[6]="images/btn_nav_main_07.gif";
	buttonimgs[7]="images/btn_nav_main_08.gif";
	buttonimgs[8]="images/btn_nav_main_09.gif";
	
	
	buttonimgs_over[0]="images/btn_nav_main_01_over.gif";
	buttonimgs_over[1]="images/btn_nav_main_02_over.gif";
	buttonimgs_over[2]="images/btn_nav_main_03_over.gif";
	buttonimgs_over[3]="images/btn_nav_main_04_over.gif";
	buttonimgs_over[4]="images/btn_nav_main_05_over.gif";
	buttonimgs_over[5]="images/btn_nav_main_06_over.gif";
	buttonimgs_over[6]="images/btn_nav_main_07_over.gif";
	buttonimgs_over[7]="images/btn_nav_main_08_over.gif";
	buttonimgs_over[8]="images/btn_nav_main_09_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];
				}
			}
		}
	}