function ChangeTab(tab)
 {
 	var MostViewedTab = document.getElementById('MostViewed');
 	var MostCommentedTab = document.getElementById('MostCommented');
 	var MostSentTab = document.getElementById('MostSent');
 	
 	if(tab == 'MostViewed')
 	{
 		MostViewedTab.style.display = 'block';
 		document.getElementById('ViewsLink').className = "activ";
 	}
 	else
 	{
 		MostViewedTab.style.display = 'none';
 		document.getElementById('ViewsLink').className = "";
 	}
 	if(tab == 'MostSent')
 	{
 		MostSentTab.style.display = 'block';
 		document.getElementById('SentLink').className = "activ";
 	}
 	else
 	{
 		MostSentTab.style.display = 'none';
 		document.getElementById('SentLink').className = "";
 	}
 	if(tab == 'MostCommented')
 	{
 		MostCommentedTab.style.display = 'block';
 		document.getElementById('CommentsLink').className = "activ";
 	}
 	else
 	{
 		MostCommentedTab.style.display = 'none';
 		document.getElementById('CommentsLink').className = "";
 	}
 }