$(function(){
	lastBlock = $("#welcome");
    maxWidth = 746;
    minWidth = 46;
		   
		   $('div.tabs a').hover(function(){
        		$(lastBlock).animate({width: minWidth+'px'},{queue:false, duration:600});
				$(this.hash).animate({width: maxWidth+'px'},{queue:false, duration:600});
					lastBlock = this.hash;
      },function(){}
    );
});