// JavaScript Document
function showS(ind){
	var sel = document.getElementById('content').getElementsByTagName('div');

	for(var i=0; i<sel.length; i++){
		if(ind == 0){ 
			sel[i].style.display = 'block';
		}
		else if(ind == 1){
			sel[i].style.display = (i==ind)?'none':'block';	
		}
		else{	
			sel[i].style.display = (i==ind-1)?'block':'none';	
		}
	}
}
onload = function(){showS(0)};