Twitter share box url parameter won't show up
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I'm trying to dynamically generate my own custom tweet button using this line of php.

    echo "<li><a href=\"javascript:\" onclick=\"javascript:
    popitup('https://twitter.com/share?text=Check%20out%20{$items[$i]
    ['name']}%20at%20&url=cmplt.st/item/{$items[$i]
    ['item_id']}&via=cmpltst&counturl=completeset.us/items/{$items[$i]['item_id']}')\"
    class=\"twitter\">T</a></li>";

The problem is that the URL parameter isn't showing up in the share box. I'm trying to get the share box to display `Check out {item name} at cmplt.st/item/{item'item_id}` where `cmplt.st/item/{item'item_id}` links to `completeset.us/items/{item_id}`, but it only displays `Check out {item name} at`. How can I get the url to actually show up in the tweet?  
					