var bbf={
	init:function()
	{
		if(!document.getElementById || !document.createTextNode){return;}
		bbf.product = document.getElementById('menuProduct');
		bbf.sellers = document.getElementById('menuSellers');
		bbf.designer = document.getElementById('menuDesigner');
		bbf.cProduct = document.getElementById('firstContent');
		bbf.cSellers = document.getElementById('secondContent');
		bbf.cDesigner = document.getElementById('thirdContent');
		
		bbf.closeContent();
		if(!bbf.product && !bbf.designer && !bbf.sellers){alert('rien?');}
		if (document.addEventListener){
		 	bbf.designer.addEventListener('click',function(event) { bbf.openContent(bbf.cDesigner, bbf.designer); }, false);
			bbf.sellers.addEventListener('click',function(event) { bbf.openContent(bbf.cSellers, bbf.sellers); }, false);
			bbf.product.addEventListener('click', function(event) { bbf.openContent(bbf.cProduct, bbf.product); }, false);
		} else if (document.attachEvent){
		  	bbf.designer.attachEvent( 'onclick', function(){return bbf.openContent(bbf.cDesigner); } );
		  	bbf.sellers.attachEvent( 'onclick', function(){return bbf.openContent(bbf.cSellers); } );
		  	bbf.product.attachEvent( 'onclick', function(){return bbf.openContent(bbf.cProduct); } );
		}
		 
	},
	openContent:function(e, source)
	{
		bbf.closeContent();
		e.className= 'open';
		source.className= 'selected';
	},
	closeContent:function()
	{
		bbf.cSellers.className= 'close';
		bbf.cDesigner.className= 'close';
		bbf.cProduct.className= 'close';
		bbf.sellers.className= '';
		bbf.designer.className= '';
		bbf.product.className= '';
		
	}
}

if (document.addEventListener){
window.addEventListener('load',bbf.init, false);
} else {
window.attachEvent('onload',bbf.init);
}