document.onmouseover = mo;
document.onmouseout = mu;
document.onmousedown = md;
document.onmouseup = mp;

function mo()
{
	if(window.event.srcElement.id == "a1")
	{
		td1.background="/images/circle1.1.jpg"
		
	}
	if(window.event.srcElement.id == "a2")
	{
		td2.background="/images/circle2.1.jpg"
		
	}
	if(window.event.srcElement.id == "a3")
	{
		td3.background="/images/circle3.1.jpg"
		
	}
	if(window.event.srcElement.id == "a21")
	{
		td21.background="/images/circle_green1.jpg"
		
	}
	if(window.event.srcElement.id == "a22")
	{
		td22.background="/images/circle_green1.jpg"
		
	}	
	if(window.event.srcElement.id == "a23")
	{
		td23.background="/images/circle_green3.jpg"
		
			}
			
			
	if(window.event.srcElement.id == "at2")
	{
		tdt22.background="/images/bg_green_circle.gif"
		
	}
	
	
	if(window.event.srcElement.id == "tdLNavi")
	{
		window.event.srcElement.bgColor="#669ACC";
		window.event.srcElement.style.cursor = "hand"
		window.event.srcElement.style.color = "white"
		window.event.srcElement.style.textDecoration = "underline"
	}
}

function mu()
{
	if(window.event.srcElement.id == "a1")
	{
		td1.background="/images/circle1.jpg"
	}

	if(window.event.srcElement.id == "a2")
	{
		td2.background="/images/circle2.jpg"
	}

	if(window.event.srcElement.id == "a3")
	{
		td3.background="/images/circle3.jpg"
	}
	
	if(window.event.srcElement.id == "a21")
	{
		td21.background="/images/circle_orange1.jpg"
		
	}
	if(window.event.srcElement.id == "a22")
	{
		td22.background="/images/circle_orange1.jpg"
		
	}
		if(window.event.srcElement.id == "a23")
	{
		td23.background="/images/circle_orange3.jpg"
		
	}
	if(window.event.srcElement.id == "at2")
	{
		tdt22.background="/images/bg_yellow_circle.gif"
		
	}
	
		
	if(window.event.srcElement.id == "tdLNavi")
	{
		window.event.srcElement.bgColor="#F4F7FB";
		window.event.srcElement.style.color = "black"
		window.event.srcElement.style.textDecoration = "none"
	}
	
	
}

function md()
{
	if(window.event.srcElement.id == "tdLNavi")
	{
		window.event.srcElement.bgColor="#6599CB";
		window.event.srcElement.style.color = "black"
	}
}

function mp()
{
	if(window.event.srcElement.id == "tdLNavi")
	{
		window.event.srcElement.bgColor="#6599CB";
		window.event.srcElement.style.color = "white"
	}
}