js

//页面位置及窗口大小

function GetPageSize() {
var scrW, scrH; 
if(windows.innerHeight && window.scrollMaxY) 
{    // Mozilla    
scrW = windows.innerWidth + window.scrollMaxX;    
scrH = windows.innerHeight + window.scrollMaxY; 
} 
else if(document.body.scrollHeight > document.body.offsetHeight)
{    // all but IE Mac    
scrW = document.body.scrollWidth;    
scrH = document.body.scrollHeight; 
} else if(document.body) 
{ // IE Mac    
scrW = document.body.offsetWidth;    
scrH = document.body.offsetHeight;
} 
var winW, winH; 
if(windows.innerHeight) 
{ // all except IE    
winW = windows.innerWidth; 
winH = windows.innerHeight; 
} else if (document.documentElement && document.documentElement.clientHeight)
{    // IE 6 Strict Mode    
winW = document.documentElement.clientWidth;     
winH = document.documentElement.clientHeight; 
} else if (document.body) { // other    
winW = document.body.clientWidth;    
winH = document.body.clientHeight; 
}    // for small pages with total size less then the viewport 
var pageW = (scrW<winW) ? winW : scrW; 
var pageH = (scrH<winH) ? winH : scrH;    
return {PageW:pageW, PageH:pageH, WinW:winW, WinH:winH};

};

//滚动条位置
function GetPageScroll() 
{ 
var x, y; if(window.pageYOffset) 
{    // all except IE    
y = window.pageYOffset;    
x = window.pageXOffset; 
} else if(document.documentElement && document.documentElement.scrollTop) 
{    // IE 6 Strict    
y = document.documentElement.scrollTop;    
x = document.documentElement.scrollLeft; 
} else if(document.body) {    // all other IE    
y = document.body.scrollTop;    
x = document.body.scrollLeft;   
} 
return {X:x, Y:y};

}