标题栏闪动效果，类似webqq技术

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      1 
   
     <
   
     html
   
     >
   
     

   
      2 
   
      
   
     <
   
     head
   
     >
   
     

   
      3 
   
      
   
     <
   
     script 
   
     type
   
     ="text/javascript"
   
     >
   
     

   
      4 
   
      
   
     var
   
      step 
   
     =
   
      
   
     0
   
     ;

   
      5 
   
      
   
     var
   
      st 
   
     =
   
      
   
     null
   
     ;

   
      6 
   
      
   
     function
   
      flash_title() {

   
      7 
   
      
   
     if
   
      (step 
   
     ==
   
      
   
     5
   
     ) { step 
   
     =
   
      
   
     0
   
      }

   
      8 
   
      
   
     if
   
      (step 
   
     ==
   
      
   
     0
   
     ) { document.title 
   
     =
   
      
   
     '
   
     ☆☆☆☆★☆☆☆☆
   
     '
   
      }

   
      9 
   
      
   
     if
   
      (step 
   
     ==
   
      
   
     1
   
     ) { document.title 
   
     =
   
      
   
     '
   
     ☆☆☆★☆★☆☆☆
   
     '
   
      }

   
     10 
   
      
   
     if
   
      (step 
   
     ==
   
      
   
     2
   
     ) { document.title 
   
     =
   
      
   
     '
   
     ☆☆★☆☆☆★☆☆
   
     '
   
      }

   
     11 
   
      
   
     if
   
      (step 
   
     ==
   
      
   
     3
   
     ) { document.title 
   
     =
   
      
   
     '
   
     ☆★☆☆☆☆☆★☆
   
     '
   
      }

   
     12 
   
      
   
     if
   
      (step 
   
     ==
   
      
   
     4
   
     ) { document.title 
   
     =
   
      
   
     '
   
     ★☆☆☆☆☆☆☆★
   
     '
   
      }

   
     13 
   
      step
   
     ++
   
     

   
     14 
   
      st 
   
     =
   
      setTimeout(
   
     "
   
     flash_title()
   
     "
   
     , 
   
     30
   
     );

   
     15 
   
      }

   
     16 
   
      window.onfocus 
   
     =
   
      
   
     function
   
     () {

   
     17 
   
      
   
     if
   
      (st 
   
     !=
   
      
   
     null
   
     )

   
     18 
   
      clearTimeout(st);

   
     19 
   
      }

   
     20 
   
      window.onblur 
   
     =
   
      
   
     function
   
     () {

   
     21 
   
      flash_title();

   
     22 
   
      }

   
     23 
   
      
   
     </
   
     script
   
     >
   
     

   
     24 
   
     

   
     25 
   
     
   
     </
   
     head
   
     >
   
     

   
     26 
   
     
   
     <
   
     body
   
     >
   
     

   
     27 
   
     
   
     </
   
     body
   
     >
   
     

   
     28 
   
     
   
     </
   
     html
   
     >
   
     

   
     29