function left(w) 
{ 
	var l =  (screen.width - w) / 2;
	return Math.round(l);
}

function top(h) 
{ 
	var t = (screen.height - h) / 2;
	return Math.round(t);
}

function articlesize(co,ile) 
{ 	
	var articletags = new Array('span','p','b','u','i','a','div','blockquote');
	var fsizes = new Array( '11px','13px','16px' );
	var doc = document.getElementById(co);
	
	for (i = 0; i < articletags.length; i++)
	{
		doc.style.fontSize = fsizes[ile];				
		currenttag =  doc.getElementsByTagName(articletags[i]);
		for (j = 0; j < currenttag.length; j++)
		{ 
			currenttag[j].style.fontSize = fsizes[ile]; 
		}
	}
	
	
}
function show(o)
{
  var div = document.getElementById(o);
  div.style.display="block";
}
function hide(o)
{
  var div = document.getElementById(o);
  div.style.display="none";
}