Dom Operation three

1. Returns the offset of the scrollbar as an object's X and Y properties

functionGetscrolloffsets (w) {//Use the specified window if the current window is used without parametersw= W | |window; //in addition to IE 8 and earlier versions, other browsers are available    if(W.pagexoffset! =NULL)          return{X:w.pagexoffset,y:w.pageyoffset}; //ie in the standard mode    varD=w.document; if(document.compatmode== "Css1compat"){          return{x:d.documentelement.scrollleft,y:d.documentelement.scrolltop}; }    //The browser in the weird mode    return{x:d.body.scrollleft,y:d.body.scrolltop};}

2. The viewport dimensions of the query window

functionGetviewportsize (w) {//Use the specified window if the current window is used without parametersw= W | |window; //in addition to IE 8 and earlier versions, other browsers are available    if(w.innerwidth!=NULL)          return{w:w.innerwidth,h:w.innerheight}; //ie in the standard mode    varD=w.document; if(document.compatmode== "Css1compat"){          return{w:d.documentelement.clientwidth,h:d.documentelement.clinetheight}; }    //The browser in the weird mode    return{w:d.body.clientwidth,h:d.body.clientwidth};}

Dom Operation three