function show_div(id){
	for(var i=1; i<=11; i++)
	{
		if(i != id){
		       document.getElementById("content".concat(i)).style.display = "none";
		}else{
			document.getElementById("content".concat(i)).style.display = "block";
		}
	}
}

function showChangSha() {
	document.getElementById("ChangSha").style.display = "block";
}

function hideChangSha() {
	document.getElementById("ChangSha").style.display = "none";
}

function doMarquee() {
	demo.scrollLeft=demo.scrollLeft<demo.scrollWidth-demo.offsetWidth?demo.scrollLeft+1:t-demo.offsetWidth;
}