fix issue 40:  Fail to read "Previous" search key  
fix issue 40:  Fail to read "Previous" search key  

CMUBigLab/webanywhere,jbigham/webanywhere,CMUBigLab/webanywhere,jbigham/webanywhere,jbigham/webanywhere,jbigham/webanywhere,CMUBigLab/webanywhere,CMUBigLab/webanywhere