function expandcollapse (postid) {
	for (i = 2007; i < 2011; i++) {
		whichpost = document.getElementById(i);
		if (whichpost.className=="postshown") { 
			whichpost.className="posthidden"; 
		}
	}

whichpost = document.getElementById(2004);
		if (whichpost.className=="postshown") { 
			whichpost.className="posthidden"; 
		}

whichpost = document.getElementById(2003);
		if (whichpost.className=="postshown") { 
			whichpost.className="posthidden"; 
		}
whichpost = document.getElementById(2002);
		if (whichpost.className=="postshown") { 
			whichpost.className="posthidden"; 
		}

whichpost = document.getElementById(2000);
		if (whichpost.className=="postshown") { 
			whichpost.className="posthidden"; 
		}
		
whichpost = document.getElementById(postid);
	if (whichpost.className=="postshown") { 
		whichpost.className="posthidden"; 
	} else { 
		whichpost.className="postshown"; 
	}
}