document.observe("dom:loaded", function() {

	var swidht=$('header').getWidth()-($('left_nav').getWidth()+$('right').getWidth())-20;
	
	$('content').setStyle({width: swidht+'px'});
	
	var leftH=$('left_nav').getHeight();
	var rightH=$('right').getHeight();
	var conH=$('content').getHeight();
	
	if (conH>leftH)
	{
		$('left_nav').setStyle({height: conH+'px'});
	}
	
	if (conH>rightH)
	{	
		$('right').setStyle({height: conH+'px'});
	}
});