dopostback is not working if there is a jquery-ui.js reference in a page

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Javascript

jQuery

jQuery-UI

I have a custom multiselect control am trying to close it if user clicks else where on a page after selecting the items and forcing a postback to trigger onchange event of it. it works as expected as long as there are no jquery references on a page. I have a helpcontrol where am addding two jquery references to show a tooltip then dopostback is not working.
Here is my code,

private static string doPostBackWhenDropdownCloses(string clientId, string divID, string postBackHiddenField)
{
   string strScript = "$(document).click(function() {" +
                      "debugger;"+
                      "if(document.getElementById('" + postBackHiddenField + .value=='1') {" +
                      " document.getElementById('" + postBackHiddenField + "').value='0';" +
                      "   $('#" + divID + "').hide( function(){" +
                      "   javascript: __doPostBack('" + clientId + "',''); " +
                      "   });" +
                        "}" +
                       "});";
   return strScript;
}