Hello,
Consider using the following JS Code at the bottom of the Page:
	jQuery(window).on( 'load', function(){
		var windowHash = location.hash;
		if( windowHash != '' && typeof windowHash !== 'undefined' ) {
			var $accordion = $(windowHash).parents('.accordion');
			if( $accordion.length > 0 ) {
				$accordion.find('.acc_content').hide();
				$accordion.find('.acctitle'+ windowHash).addClass('acctitlec').next().show();
			}
		}
	});
and then simply add the id Attribute to the .acctitle Element. Example:
	Login to your Account
	
		..
	
	New Signup? Register for an Account
	
		...
	
Now, you can Link the Page using this Link with a Hash referencing to the ID: login-register-3.html#accordion-register .
This will definitely work fine. Hope this Helps!
Let us know if we can help you with anything else or if you find any further issues.