function showTab(blockPrefix, tabid)
{
	var tab1 = document.getElementById(blockPrefix + "tab1");
	var tab2 = document.getElementById(blockPrefix + "tab2");
	var tab3 = document.getElementById(blockPrefix + "tab3");

	var tabber1 = document.getElementById(blockPrefix + "tabber1");
	var tabber2 = document.getElementById(blockPrefix + "tabber2");
	var tabber3 = document.getElementById(blockPrefix + "tabber3");
	
	switch(tabid)
	{
		case 1:
			tab1.style.display = "block";
			tab2.style.display = "none";
			tab3.style.display = "none";

			tabber1.setAttribute("class", "tab1 active");
			tabber2.setAttribute("class", "tab2");
			tabber3.setAttribute("class", "tab3");
			break;
		case 2:
			tab1.style.display = "none";
			tab2.style.display = "block";
			tab3.style.display = "none";

			tabber1.setAttribute("class", "tab1");
			tabber2.setAttribute("class", "tab2 active");
			tabber3.setAttribute("class", "tab3");
			break;
		case 3:
			tab1.style.display = "none";
			tab2.style.display = "none";
			tab3.style.display = "block";

			tabber1.setAttribute("class", "tab1");
			tabber2.setAttribute("class", "tab2");
			tabber3.setAttribute("class", "tab3 active");
			break;
		default:
			return;
	}	
}