$().ready(function(){ 
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	/*
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	$("ul#radicals_list").hide(); 			   
	$("ul#sets_list").hide(); 			   
	$("ul#sequences_list").hide(); 			   
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	$("ul#algebra_functions_list").hide(); 			   
	/*
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	$("ul#quadratic_equations_list").hide(); 			   
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	*/
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	/*
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	*/
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	/*
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	$("ul#probability_list").hide(); 			   
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		return false;
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		return false;
	});//end of .click callback 	
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		return false;
	});//end of .click callback 	
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		return false;
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	$("#statistics_link").click(function(){
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	$("#probability_link").click(function(){
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		return false;
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