Topview();

function LookOn(a){

	for (var i=1; 4 >= i; i++){
		var TOP_BOX = document.getElementById("topview_" + i).style;
		var TOP_BTN = document.getElementById("newsbtn_" + i).style;
		if(i == a ){
		TOP_BOX.visibility = "visible";
		TOP_BOX.display = "block";
		TOP_BTN.zIndex= 2;
		document.getElementById("newsbtnimg_" + i).src = "./lib-img/topnewsbtn" + i + "b.gif";
		TOP_BOX.backgroundImage = "url(./lib-img/topnewsbox_bg.jpg)";
		}else{
		TOP_BOX.visibility = "hidden";
		TOP_BOX.display = "none";
		TOP_BTN.zIndex= 0;
		document.getElementById("newsbtnimg_" + i).src = "./lib-img/topnewsbtn" + i + ".gif";
		}
	}
}


function Topview(){
var TopNum = Math.floor(Math.random()*5);

if(TopNum == 0 || TopNum == "undefine"){
	TopNum = 1;
}

	for (var i=1; 4 >= i; i++){
		var TOP_BOX = document.getElementById("topview_" + i).style;
		var TOP_BTN = document.getElementById("newsbtn_" + i).style;
		if(i == TopNum){
		document.getElementById("newsbtnimg_" + i).src = "./lib-img/topnewsbtn" + i + "b.gif";
		TOP_BOX.backgroundImage = "url(./lib-img/topnewsbox_bg.jpg)";
		TOP_BOX.visibility = "visible";
		TOP_BOX.display = "block";
		TOP_BTN.zIndex= 2;
		}else{
		document.getElementById("newsbtnimg_" + i).src = "./lib-img/topnewsbtn" + i + ".gif";
		TOP_BOX.backgroundImage = "url(./lib-img/topnewsbox" + i + "_bg.jpg)";
		TOP_BOX.visibility = "visible";
		TOP_BOX.display = "none";
		TOP_BTN.zIndex= 0;
		}
	}
setTimeout("Topview()",5000);

}