var t;

function switch_roating_ads(frame_num)
{	
	var frame_num_new = frame_num;
	if(frame_num == 4)
	{
		frame_num_new = 0;
	}
	else
	{
		frame_num_new++;
	}
	
	if(frame_num == 0)
	{
		document.getElementById("telephone").style.display = "block";
		document.getElementById("button_telephone_over").style.display = "block"; 
		document.getElementById("button_telephone").style.display = "none";
	}
	else
	{
		document.getElementById("telephone").style.display = "none";
		document.getElementById("button_telephone_over").style.display = "none"; 
		document.getElementById("button_telephone").style.display = "block";
	}
	if(frame_num == 1)
	{
		document.getElementById("ldistance").style.display = "block";
		document.getElementById("button_ldistance_over").style.display = "block"; 
		document.getElementById("button_ldistance").style.display = "none";
	}
	else
	{
		document.getElementById("ldistance").style.display = "none";
		document.getElementById("button_ldistance_over").style.display = "none"; 
		document.getElementById("button_ldistance").style.display = "block";
	}
	if(frame_num == 2)
	{
		document.getElementById("internet").style.display = "block";
		document.getElementById("button_internet_over").style.display = "block"; 
		document.getElementById("button_internet").style.display = "none";
	}
	else
	{
		document.getElementById("internet").style.display = "none";
		document.getElementById("button_internet_over").style.display = "none"; 
		document.getElementById("button_internet").style.display = "block";
	}
	if(frame_num == 3)
	{
		document.getElementById("cellular").style.display = "block";
		document.getElementById("button_cellular_over").style.display = "block"; 
		document.getElementById("button_cellular").style.display = "none";
	}
	else
	{
		document.getElementById("cellular").style.display = "none";
		document.getElementById("button_cellular_over").style.display = "none"; 
		document.getElementById("button_cellular").style.display = "block";
	}
	if(frame_num == 4)
	{
		document.getElementById("bundles").style.display = "block";
		document.getElementById("button_bundles_over").style.display = "block"; 
		document.getElementById("button_bundles").style.display = "none";
	}
	else
	{
		document.getElementById("bundles").style.display = "none";
		document.getElementById("button_bundles_over").style.display = "none"; 
		document.getElementById("button_bundles").style.display = "block";
	}
	
	//alert(frame_num_new);
	clearTimeout(t);
	t = setTimeout("switch_roating_ads('"+frame_num_new+"')",6000);
	 
}