function changesection (sectionchange) 
{
	switch (sectionchange)
	{
		case 1:
			var table4 = obj("table4");
			var table3 = obj("table3");
			var table2 = obj("table2");
			var table1 = obj("table1");			
			table1.style.display = "block";
			table2.style.display = "none";
			table3.style.display = "none";
			table4.style.display = "none";
			var menu4 = obj("menu4");
			var menu3 = obj("menu3");
			var menu2 = obj("menu2");
			var menu1 = obj("menu1");			
			menu1.style.display = "block";
			menu2.style.display = "none";
			menu3.style.display = "none";
			menu4.style.display = "none";
		break; 
		
		case 2:
			var table4 = obj("table4");
			var table3 = obj("table3");
			var table2 = obj("table2");
			var table1 = obj("table1");			
			table1.style.display = "none";
			table2.style.display = "block";
			table3.style.display = "none";
			table4.style.display = "none";
			var menu4 = obj("menu4");
			var menu3 = obj("menu3");
			var menu2 = obj("menu2");
			var menu1 = obj("menu1");			
			menu1.style.display = "none";
			menu2.style.display = "block";
			menu3.style.display = "none";
			menu4.style.display = "none";
		break; 
		
		case 3:
			var table4 = obj("table4");
			var table3 = obj("table3");
			var table2 = obj("table2");
			var table1 = obj("table1");			
			table1.style.display = "none";
			table2.style.display = "none";
			table3.style.display = "block";
			table4.style.display = "none";
			var menu4 = obj("menu4");
			var menu3 = obj("menu3");
			var menu2 = obj("menu2");
			var menu1 = obj("menu1");			
			menu1.style.display = "none";
			menu2.style.display = "none";
			menu3.style.display = "block";
			menu4.style.display = "none";
		break; 


		case 4:
			var table4 = obj("table4");
			var table3 = obj("table3");
			var table2 = obj("table2");
			var table1 = obj("table1");			
			table1.style.display = "none";
			table2.style.display = "none";
			table3.style.display = "none";
			table4.style.display = "block";
			var menu4 = obj("menu4");
			var menu3 = obj("menu3");
			var menu2 = obj("menu2");
			var menu1 = obj("menu1");			
			menu1.style.display = "none";
			menu2.style.display = "none";
			menu3.style.display = "none";
			menu4.style.display = "block";
		break; 

		default: break;

	}
}