// functions
	
	function toggleblocks (postid)
	{
		var whichpost = document.getElementById(postid);
		if (whichpost.className=="expandblock")
		{
			whichpost.className="collapseblock";
			document.getElementById(postid+"_but").src = "../images/archive/expand_triangle.gif";
			
		} else
		{
			whichpost.className="expandblock";
			document.getElementById(postid+"_but").src = "../images/archive/collapse_triangle.gif";
			
		}
	}
	
// preload images
	
	if (document.images)
	{
		arrow1= new Image(8,8); 
		arrow1.src="../images/archive/collapse_triangle.gif"; 
		
		arrow2= new Image(8,8); 
		arrow2.src="../images/archive/expand_triangle.gif"; 
	}