window.addEvent('domready',function(){
	if(Browser.ie6){
		$('ie6_warning').show();
	}
	if(Browser.ie7){
		$('ie7_warning').show();
	}
	
	$$('.sub_navigation').setStyle('display','none');
	
	wrapperCoordinates = $('wrapper').getCoordinates();
	$('main_navigation').getChildren('li').addEvent('mouseover',function(el){
		this.addClass('active');
		if($chk(this.getElement('ul'))){
			this.getElement('ul').setStyle('display','block');
			coordinates = this.getElement('ul').getCoordinates($('wrapper'));
			if(this.getElement('ul').getElements('li').length > 6){
				this.getElement('ul').setStyle('width','300px');
			}
			
			if(coordinates.right > wrapperCoordinates.width){
				this.getElement('ul').setStyle('left',wrapperCoordinates.width-coordinates.right-5);
			}
		}
	})
	
	$('main_navigation').getChildren('li').addEvent('mouseout',function(el){
		if(!this.hasClass('enabled')){ this.removeClass('active'); }
		
		if($chk(this.getElement('ul'))) {
			this.getElement('ul').setStyle('display','none'); 
		}
	})
});