function over_change_top(val){
	for(var i=0;i<arr2.length;i++){
		if(val==i){
			document.getElementById(arr2[i]).style.background= "url(/images/most_bar_bg3.gif)";
			document.getElementById(arr2[i]).style.color = "#CC0000";
			document.getElementById(arr[i]).style.display = "block";
		}else{
			document.getElementById(arr2[i]).style.background = "url(/images/most_bar_bg2.gif)";
			document.getElementById(arr2[i]).style.color = "#000000";
			document.getElementById(arr[i]).style.display = "none";			
		}	
	}	
}