function setDimensions()	{
	var menu = document.getElementById('menu_list');
	var menu_width = menu.offsetWidth;
	var element_width = 0;
	var elements_count = 0;
	
	var margin_width = 5;
	
	for(var i=0;i<menu.childNodes.length;i++)	{
		var current_element = menu.childNodes.item(i);
		if(current_element.tagName && current_element.tagName == 'LI')	{
			elements_count++;
		}
	}
	var element_width = parseInt((menu_width - (elements_count-1) * 5) / elements_count);
	
	var current_element_counter = 0;
	for(var i=0;i<menu.childNodes.length;i++)	{
		var current_element = menu.childNodes.item(i);
		if(current_element.tagName && current_element.tagName == 'LI')	{
			current_element_counter++;
			current_element.style.width = element_width + 'px';
			if(current_element_counter < elements_count)	
				current_element.style.marginRight = '5px';
		}
	}
	if(document.getElementById('left'))
		document.getElementById('left').style.width= 2 * element_width + margin_width + 'px';
	if(document.getElementById('right'))
		document.getElementById('right').style.width= 2 * element_width + margin_width + 'px';
	document.getElementById('menu_list').style.width = elements_count * element_width + (elements_count-1)*5+10+'px';
	document.getElementById('overhead').style.width = elements_count * element_width + (elements_count-1)*5+'px';
	document.getElementById('header').style.width = elements_count * element_width + (elements_count-1)*5+'px';
	document.getElementById('content').style.width = elements_count * element_width + (elements_count-1)*5+'px';
	document.getElementById('footer').style.width = elements_count * element_width + (elements_count-1)*5+'px';
	document.body.style.backgroundPosition = 2 * element_width + 12 + 30 + 'px bottom';
}