// JavaScript Document
function showDiv(divId) {
	document.getElementById(divId).style.display = "block";
	document.getElementById("link_"+divId).href = "javascript:hideDiv('"+divId+"');";
	//document.getElementById("link_"+divId).className = "bold";
	document.getElementById("link_"+divId).style.fontWeight = "bold";
	document.getElementById("arrow_"+divId).innerHTML = "▼";
}
function hideDiv(divId) {
	document.getElementById(divId).style.display = "none";
	document.getElementById("link_"+divId).href = "javascript:showDiv('"+divId+"');";
	//document.getElementById("link_"+divId).className = "";
	document.getElementById("link_"+divId).style.fontWeight = "normal";
	document.getElementById("arrow_"+divId).innerHTML = "►";
}
var c = 0;
var s;
function homeSwitch() { 
	if (c%4==0){
		document.getElementById('home_sys').style.display = "block";
		document.getElementById('home_demo').style.display = "none";
		document.getElementById('home_web').style.display = "none";
		document.getElementById('home_refer').style.display = "none";
	} 
	if (c%4==1){
		document.getElementById('home_sys').style.display = "none";
		document.getElementById('home_demo').style.display = "block";
		document.getElementById('home_web').style.display = "none";
		document.getElementById('home_refer').style.display = "none";
	} 
	if (c%4==2){
		document.getElementById('home_sys').style.display = "none";
		document.getElementById('home_demo').style.display = "none";
		document.getElementById('home_web').style.display = "block";
		document.getElementById('home_refer').style.display = "none";
	} 
	if (c%4==3){
		document.getElementById('home_sys').style.display = "none";
		document.getElementById('home_demo').style.display = "none";
		document.getElementById('home_web').style.display = "none";
		document.getElementById('home_refer').style.display = "block";
	}
	c=c+1;
	s=setTimeout("homeSwitch()",6000);
}