jQuery Ligthbox open and close instantly
===

I have a function to erase some commerce from the database, I want the confirmation to appeared in a lightbox. It does open in a lightbox but it close almost instantly =/

jQuery:

    	$('a#MontrerSuppression').click(function(){
	
		$('#BackgroundSuppression,#Suppression').fadeIn('fast');
	
	});
	
	$('a#CacherSuppression').click(function(){
	
		$('#BackgroundSuppression,#Suppression').fadeOut('fast');
	
	});

php/html:

    <a href='myaccount.php?IDCommerce=<?php echo $Commerce['IDCommerce'];?>' id="MontrerSuppression">Supprimer Commerce</a>

Think the problem is on the way I "link" the html link to the jQuery function but can't figure out what is the proper way to do it.

Really appreciat if someone could give me some help