function showSubNav0()
{		
	if (document.getElementById) {
		document.getElementById("sub_nav0").style.visibility ="visible";
	} else if (document.all) { 
		document.all("sub_nav0").style.visibility ="visible";
	} else if (document.layers) {
		document.layers("sub_nav0").style.visibility ="visible";
	}
}

function hideSubNav0()
{		
	if (document.getElementById) {
		document.getElementById("sub_nav0").style.visibility ="hidden";
	} else if (document.all) { 
		document.all("sub_nav0").style.visibility ="hidden";
	} else if (document.layers) {
		document.layers("sub_nav0").style.visibility ="hidden";
	}
}

function showSubNav1()
{		
	if (document.getElementById) {
		document.getElementById("sub_nav1").style.visibility ="visible";
	} else if (document.all) { 
		document.all("sub_nav1").style.visibility ="visible";
	} else if (document.layers) {
		document.layers("sub_nav1").style.visibility ="visible";
	}
}

function hideSubNav1()
{	
	if (document.getElementById) {
		document.getElementById("sub_nav1").style.visibility ="hidden";
	} else if (document.all) { 
		document.all("sub_nav1").style.visibility ="hidden";
	} else if (document.layers) {
		document.layers("sub_nav1").style.visibility ="hidden";
	}
}

function showSubNav2()
{		
	if (document.getElementById) {
		document.getElementById("sub_nav2").style.visibility ="visible";
	} else if (document.all) { 
		document.all("sub_nav2").style.visibility ="visible";
	} else if (document.layers) {
		document.layers("sub_nav2").style.visibility ="visible";
	}
}

function hideSubNav2()
{		
	if (document.getElementById) {
		document.getElementById("sub_nav2").style.visibility ="hidden";
	} else if (document.all) { 
		document.all("sub_nav2").style.visibility ="hidden";
	} else if (document.layers) {
		document.layers("sub_nav2").style.visibility ="hidden";
	}
}

function showSubNav3()
{		
	if (document.getElementById) {
		document.getElementById("sub_nav3").style.visibility ="visible";
	} else if (document.all) { 
		document.all("sub_nav3").style.visibility ="visible";
	} else if (document.layers) {
		document.layers("sub_nav3").style.visibility ="visible";
	}
}

function hideSubNav3()
{		
	if (document.getElementById) {
		document.getElementById("sub_nav3").style.visibility ="hidden";
	} else if (document.all) { 
		document.all("sub_nav3").style.visibility ="hidden";
	} else if (document.layers) {
		document.layers("sub_nav3").style.visibility ="hidden";
	}
}

function showSubNav4()
{		
	if (document.getElementById) {
		document.getElementById("sub_nav4").style.visibility ="visible";
	} else if (document.all) { 
		document.all("sub_nav4").style.visibility ="visible";
	} else if (document.layers) {
		document.layers("sub_nav4").style.visibility ="visible";
	}
}

function hideSubNav4()
{		
	if (document.getElementById) {
		document.getElementById("sub_nav4").style.visibility ="hidden";
	} else if (document.all) { 
		document.all("sub_nav4").style.visibility ="hidden";
	} else if (document.layers) {
		document.layers("sub_nav4").style.visibility ="hidden";
	}
}

function showSubNav5()
{		
	if (document.getElementById) {
		document.getElementById("sub_nav5").style.visibility ="visible";
	} else if (document.all) { 
		document.all("sub_nav5").style.visibility ="visible";
	} else if (document.layers) {
		document.layers("sub_nav5").style.visibility ="visible";
	}
}

function hideSubNav5()
{		
	if (document.getElementById) {
		document.getElementById("sub_nav5").style.visibility ="hidden";
	} else if (document.all) { 
		document.all("sub_nav5").style.visibility ="hidden";
	} else if (document.layers) {
		document.layers("sub_nav5").style.visibility ="hidden";
	}
}

function showSubNav6()
{		
	if (document.getElementById) {
		document.getElementById("sub_nav6").style.visibility ="visible";
	} else if (document.all) { 
		document.all("sub_nav6").style.visibility ="visible";
	} else if (document.layers) {
		document.layers("sub_nav6").style.visibility ="visible";
	}
}

function hideSubNav6()
{		
	if (document.getElementById) {
		document.getElementById("sub_nav6").style.visibility ="hidden";
	} else if (document.all) { 
		document.all("sub_nav6").style.visibility ="hidden";
	} else if (document.layers) {
		document.layers("sub_nav6").style.visibility ="hidden";
	}
}

function showSubNav7()
{		
	if (document.getElementById) {
		document.getElementById("sub_nav7").style.visibility ="visible";
	} else if (document.all) { 
		document.all("sub_nav7").style.visibility ="visible";
	} else if (document.layers) {
		document.layers("sub_nav7").style.visibility ="visible";
	}
}

function hideSubNav7()
{		
	if (document.getElementById) {
		document.getElementById("sub_nav7").style.visibility ="hidden";
	} else if (document.all) { 
		document.all("sub_nav7").style.visibility ="hidden";
	} else if (document.layers) {
		document.layers("sub_nav7").style.visibility ="hidden";
	}
}

function showSubNav8()
{		
	if (document.getElementById) {
		document.getElementById("sub_nav8").style.visibility ="visible";
	} else if (document.all) { 
		document.all("sub_nav8").style.visibility ="visible";
	} else if (document.layers) {
		document.layers("sub_nav8").style.visibility ="visible";
	}
}

function hideSubNav8()
{		
	if (document.getElementById) {
		document.getElementById("sub_nav8").style.visibility ="hidden";
	} else if (document.all) { 
		document.all("sub_nav8").style.visibility ="hidden";
	} else if (document.layers) {
		document.layers("sub_nav8").style.visibility ="hidden";
	}
}