JQuery select block before current main block

gistfile1.js

/**HTML CODE
<div class="edit_content_options"><a class="edit_link">Edit</a></div>
<div>
   <div>Edit block, with event</div>
</div>*/

function find_parent(current_block)
{
	var parent, searchblock, edit_option;
	
	parent 		= current_block.parent();
	searchblock	= parent.find('div[class="edit_content_options"]');
	
	if(searchblock.length == 0)
	{
		return find_parent(parent);
	}
	else
	{
		edit_option	= current_block.prev();
		
	        return edit_option.find('a[class="edit_link"]').attr('href');
	}
}