JS获取当前页面的高度

var Client_Scrjs = (window.innerHeight) ? window.innerHeight : (document.documentElement && document.documentElement.clientHeight) ? document.documentElement.clientHeight : document.body.offsetHeight;

宽度如下：

  
    

   
     function
   
      GetBrowserW() {
 
   
     var
   
      winWidth 
   
     =
   
      
   
     0
   
     ;
 
   
     if
   
      (window.innerWidth) winWidth 
   
     =
   
      window.innerWidth;
 
   
     else
   
      
   
     if
   
      ((document.body) 
   
     &&
   
      (document.body.clientWidth)) winWidth 
   
     =
   
      document.body.clientWidth;
 
   
     if
   
      (document.documentElement 
   
     &&
   
      document.documentElement.clientWidth) {
 winWidth 
   
     =
   
      document.documentElement.clientWidth;
 }
 
   
     var
   
      a 
   
     =
   
      document.getElementById(
   
     "
   
     happy
   
     "
   
     );
 winWidth 
   
     =
   
      winWidth 
   
     -
   
      
   
     900
   
     ;
 
   
     if
   
      (winWidth 
   
     <=
   
      
   
     0
   
     ) {
 winWidth 
   
     =
   
      
   
     2
   
     ;
 }
 
   
     else
   
      {
 winWidth 
   
     =
   
      (winWidth 
   
     /
   
      
   
     2
   
     ) 
   
     +
   
      
   
     5
   
     
 }

 a.style.left 
   
     =
   
      winWidth 
   
     +
   
      
   
     "
   
     px
   
     "
   
     ;
 a.style.visibility 
   
     =
   
      
   
     "
   
     visible
   
     "
   
     ;
 }