function showSection(sectionID) {

	switch(sectionID){
		case 1:
				document.getElementById("section1").style.display="block";
				document.getElementById("section2").style.display="none";	

				var tab1 = document.getElementById("sectionLink1"); 
				var tab2 = document.getElementById("sectionLink2"); 

				tab1.setAttribute("class", "active_tab"); 
				tab1.setAttribute("className", "active_tab"); 
				
				tab2.setAttribute("class", "tab"); 
				tab2.setAttribute("className", "tab"); 

				break;
		case 2:
				document.getElementById("section1").style.display="none";
				document.getElementById("section2").style.display="block";
				var tab1 = document.getElementById("sectionLink1"); 
				var tab2 = document.getElementById("sectionLink2"); 

				tab1.setAttribute("class", "tab"); 
				tab1.setAttribute("className", "tab"); 
				
				tab2.setAttribute("class", "active_tab"); 
				tab2.setAttribute("className", "active_tab"); 		
				
				break;		
	}
}