images/Main.js

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// Code in 2007.1
var
// 获取元素
$ = function(elementId){
	if(elementId == null) return false;
	return document.getElementById(elementId);
},
// 返回字符串的小写
LcStr = function(Str) {
	if(Str == null) return false;
	return Str.toLowerCase();
},
// 输出数据(调试用)
Print = function(Msg) {
	$("message").innerHTML += Msg +"<br />";
},
// 判断浏览器
brower = function() {
	var ua = LcStr(navigator.userAgent);
	var os = new Object();
	os.isFirefox = ua.indexOf ("gecko") != -1;
	os.isOpera = ua.indexOf ("opera") != -1;
	os.isIE = !os.isOpera && ua.indexOf ("msie") != -1;
	return os;
},
// 获取页面大小
getPageSize = function() {
	var xScroll, yScroll; 
	if (window.innerHeight && window.scrollMaxY) { 
		xScroll = document.body.scrollWidth;
		yScroll = window.innerHeight + window.scrollMaxY;
	} else if (document.body.scrollHeight > document.body.offsetHeight){ // all but Explorer Mac
		xScroll = document.body.scrollWidth;
		yScroll = document.body.scrollHeight;
	} else { // Explorer Mac...would also work in Explorer 6 Strict, Mozilla and Safari
		xScroll = document.body.offsetWidth;
		yScroll = document.body.offsetHeight;
	} 
	var windowWidth, windowHeight;
	if (self.innerHeight) { // all except Explorer
		windowWidth = self.innerWidth;
		windowHeight = self.innerHeight;
	} else if (document.documentElement && document.documentElement.clientHeight) { // Explorer 6 Strict Mode
		windowWidth = document.documentElement.clientWidth;
		windowHeight = document.documentElement.clientHeight;
	} else if (document.body) { // other Explorers
		windowWidth = document.body.clientWidth;
		windowHeight = document.body.clientHeight;
	}  
	// for small pages with total height less then height of the viewport
	if(yScroll < windowHeight){
		pageHeight = windowHeight;
	} else { 
		pageHeight = yScroll;
	}
	// for small pages with total width less then width of the viewport
	if(xScroll < windowWidth){ 
		pageWidth = windowWidth;
	} else {
		pageWidth = xScroll;