function showVantage(n)    
	{       
    var o = document.getElementById('slideVantage').getElementsByTagName("a");    
    var c = document.getElementById('VantageContent').getElementsByTagName("div");     
    for(i = 0; l = o.length, i < l; o[i].className = '',c[i].style.display = 'none',i++ );    
    o[n].className = 'over';    
    c[n].style.display = 'block';       
	} 
	function showNews(n)    
	{       
    var o = document.getElementById('slideNews').getElementsByTagName("a");    
    var c = document.getElementById('newsContent').getElementsByTagName("div");     
    for(i = 0; l = o.length, i < l; o[i].className = '',c[i].style.display = 'none',i++ );    
    o[n].className = 'over';    
    c[n].style.display = 'block';       
	}   
	function showStation(n)    
	{       
    var x = document.getElementById('slideStation').getElementsByTagName("a");    
    var y = document.getElementById('stationContent').getElementsByTagName("div");     
    for(i = 0; l = x.length, i < l; x[i].className = '',y[i].style.display = 'none',i++ );    
    x[n].className = 'over';    
    y[n].style.display = 'block';       
	} 
	function showCourse(n)    
	{       
    var d = document.getElementById('slideCourse').getElementsByTagName("a");    
    var j = document.getElementById('courseContent').getElementsByTagName("div");     
    for(i = 0; l = d.length, i < l; d[i].className = '',j[i].style.display = 'none',i++ );    
    d[n].className = 'over';    
    j[n].style.display = 'block';       
	} 
	function showVideo(n)    
	{       
    var s = document.getElementById('slideVideo').getElementsByTagName("a");    
    var t = document.getElementById('videoContent').getElementsByTagName("div");     
    for(i = 0; l = s.length, i < l; s[i].className = '',t[i].style.display = 'none',i++ );    
    s[n].className = 'over';    
    t[n].style.display = 'block';       
	}