// JavaScript Document
function navgation_left(id)
	{
		var div_id;
		//alert(document.getElementById(id).style.display);
		div_id=document.getElementById(id);
 		if(div_id.style.display=="none")
			{
			div_id.style.display="block";
			}
		else
			{
			div_id.style.display="none";
			}
			
	}