function section_highlight(menuid){
	var menuitem = document.getElementById(menuid);
	menuitem.style.backgroundColor = "yellow";
	menuitem.style.borderColor = "black";
}

function section_unhighlight(menuid){
	var menuitem = document.getElementById(menuid);
	menuitem.style.backgroundColor = "#FFECA1";
	menuitem.style.borderColor = "#FFECA1";

}

function cs_content_highlight(menuid){
	var menuitem = document.getElementById(menuid);
	menuitem.style.backgroundColor = "#6699FF";

}

function cs_content_unhighlight(menuid){
	var menuitem = document.getElementById(menuid);
	menuitem.style.backgroundColor = "#003366";

}

function cs_change_content(contentid){
	var content_item = document.getElementById(contentid);
	
	//hide all
	for (i=1;i<5;i++)
	{	
		content_element = "content_" + i;
		var contentitem = document.getElementById(content_element);
		contentitem.style.visibility = "hidden";
	}

	var mycontent = document.getElementById("content_area_1");
	var mycontentmenu = document.getElementById("thecontentmenu");
	var mycontainer = document.getElementById("thecontainer");
	if (contentid == "content_2"){
		mycontainer.style.height = "1100px";
		mycontent.style.height = "770px";
		mycontentmenu.style.height = "760px";
	}else{
		mycontainer.style.height = "603px";
		mycontent.style.height = "260px";
		mycontentmenu.style.height = "263px";

	}


	// show content
	content_item.style.visibility = "visible";
}