DIV+CSS布局网页页面实现多风格选择的方法

DIV+CSS布局网页页面实现多风格选择的方法

1. styleswitcher.js

function setActiveStyleSheet(title) {

var i, a, main;

for(i=0; (a = document.getElementsByTagName(“link”)[i]); i++) {

if(a.getAttribute(“rel”).indexOf(“style”) != -1 && a.getAttribute(“title”)) {

a.disabled = true;

if(a.getAttribute(“title”) == title) a.disabled = false;

}

}

}

function getActiveStyleSheet() {

var i, a;

for(i=0; (a = document.getElementsByTagName(“link”)[i]); i++) {

if(a.getAttribute(“rel”).indexOf(“style”) != -1 && a.getAttribute(“title”) && !a.disabled) return a.getAttribute(“title”);

}

return null;

}

function getPreferredStyleSheet() {

var i, a;

for(i=0; (a = document.getElementsByTagName(“link”)[i]); i++) {

if(a.getAttribute(“rel”).indexOf(“style”) != -1

&& a.getAttribute(“rel”).indexOf(“alt”) == -1

&& a.getAttribute(“title”)

) return a.getAttribute(“title”);

}

return null;

}

function createCookie(name,value,days) {

if (days) {

var date = new Date();

date.setTime(date.getTime()+(days*24*60*60*1000));

var expires = “; expires=”+date.toGMTString();

}

else expires = “”;

document.cookie = name+”=”+value+expires+”; path=/”;

}

function readCookie(name) {

var nameEQ = name + “=”;

var ca = document.cookie.split(‘;’);

for(var i=0;i < ca.length;i++) {

var c = ca[i];

while (c.charAt(0)==’ ‘) c = c.substring(1,c.length);

if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);

}

return null;

}

window.onload = function(e) {

var cookie = readCookie(“style”);

var title = cookie ? cookie : getPreferredStyleSheet();

setActiveStyleSheet(title);

}

window.onunload = function(e) {

var title = getActiveStyleSheet();

createCookie(“style”, title, 365);

}

var cookie = readCookie(“style”);

var title = cookie ? cookie : getPreferredStyleSheet();

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DIV+CSS布局网页页面实现多风格选择的方法

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