function ESStep(step)
{
	var ES1 = document.getElementById("ES1");
	var ES2 = document.getElementById("ES2");
	var ES3 = document.getElementById("ES3");
	var ES4 = document.getElementById("ES4");
	var ES5 = document.getElementById("ES5");
	var ES6 = document.getElementById("ES6");
	var ES7 = document.getElementById("ES7");
	var ES8 = document.getElementById("ES8");
	
	switch(step)
	{
		case 1:
		ES1.style.display = "block";
		ES2.style.display = "none";
		ES3.style.display = "none";
		ES4.style.display = "none";
		ES5.style.display = "none";
		ES6.style.display = "none";
		ES7.style.display = "none";
		ES8.style.display = "none";
	
		break;
		
		case 2:
		ES1.style.display = "none";
		ES2.style.display = "block";
		ES3.style.display = "none";
		ES4.style.display = "none";
		ES5.style.display = "none";
		ES6.style.display = "none";
		ES7.style.display = "none";
		ES8.style.display = "none";
		break;
		
		case 3:
		ES1.style.display = "none";
		ES2.style.display = "none";
		ES3.style.display = "block";
		ES4.style.display = "none";
		ES5.style.display = "none";
		ES6.style.display = "none";
		ES7.style.display = "none";
		ES8.style.display = "none";
		break;
		
		case 4:
		ES1.style.display = "none";
		ES2.style.display = "none";
		ES3.style.display = "none";
		ES4.style.display = "block";
		ES5.style.display = "none";
		ES6.style.display = "none";
		ES7.style.display = "none";
		ES8.style.display = "none";
		break;
		
		case 5:
		ES1.style.display = "none";
		ES2.style.display = "none";
		ES3.style.display = "none";
		ES4.style.display = "none";
		ES5.style.display = "block";
		ES6.style.display = "none";
		ES7.style.display = "none";
		ES8.style.display = "none";
		break;
		
		case 6:
		ES1.style.display = "none";
		ES2.style.display = "none";
		ES3.style.display = "none";
		ES4.style.display = "none";
		ES5.style.display = "none";
		ES6.style.display = "block";
		ES7.style.display = "none";
		ES8.style.display = "none";
		break;
		
		case 7:
		ES1.style.display = "none";
		ES2.style.display = "none";
		ES3.style.display = "none";
		ES4.style.display = "none";
		ES5.style.display = "none";
		ES6.style.display = "none";
		ES7.style.display = "block";
		ES8.style.display = "none";
		break;
		
		case 8:
		ES1.style.display = "none";
		ES2.style.display = "none";
		ES3.style.display = "none";
		ES4.style.display = "none";
		ES5.style.display = "none";
		ES6.style.display = "none";
		ES7.style.display = "none";
		ES8.style.display = "block";
		break;
	}
}