function display_content(twId)
{
	twContent = document.getElementById("twcontent");
	twSelect = document.getElementById(twId);
	twButton = document.getElementById("t"+twId);
	twRow = document.getElementById("tt"+twId);

	twContent.innerHTML = twSelect.innerHTML;
	twCurrentMessage = twId.substr(4);
	reset_highlight();
	twButton.style.fontWeight = 'bold';
	twRow.style.background = 'silver';
}

function reset_highlight()
{
	for(i=0; i<10; i++)
	{
		twb = document.getElementById("tcdat"+i);
		twb.style.fontWeight = '';
		
		twb2 = document.getElementById("ttcdat"+i);
		twb2.style.background = '';
	}
}

function display_next()
{
	if(twCurrentMessage == "0")		nextNum = "1";
	if(twCurrentMessage == "1")		nextNum = "2";
	if(twCurrentMessage == "2")		nextNum = "3";
	if(twCurrentMessage == "3")		nextNum = "4";
	if(twCurrentMessage == "4")		nextNum = "5";
	if(twCurrentMessage == "5")		nextNum = "6";
	if(twCurrentMessage == "6")		nextNum = "7";
	if(twCurrentMessage == "7")		nextNum = "8";
	if(twCurrentMessage == "8")		nextNum = "9";
	if(twCurrentMessage == "9")		nextNum = "0";
	display_content("cdat"+nextNum);
}

function display_prev()
{
	if(twCurrentMessage == "0")		prevNum = "9";
	if(twCurrentMessage == "1")		prevNum = "0";
	if(twCurrentMessage == "2")		prevNum = "1";
	if(twCurrentMessage == "3")		prevNum = "2";
	if(twCurrentMessage == "4")		prevNum = "3";
	if(twCurrentMessage == "5")		prevNum = "4";
	if(twCurrentMessage == "6")		prevNum = "5";
	if(twCurrentMessage == "7")		prevNum = "6";
	if(twCurrentMessage == "8")		prevNum = "7";
	if(twCurrentMessage == "9")		prevNum = "8";
	
	display_content("cdat"+prevNum);
}