var Mac = navigator.appVersion.indexOf('Mac',0) != -1;
var Win = navigator.appVersion.indexOf('Win',0) != -1;
var IE = navigator.appName == 'Microsoft Internet Explorer';
var NN = navigator.appName == 'Netscape';
var Moz = navigator.userAgent.indexOf("Gecko") != -1;
var VER = parseInt(navigator.appVersion);
var ver = navigator.appVersion;
var Vmajor = parseInt(navigator.appVersion); // ex. 3
var Vminor = parseFloat(navigator.appVersion); // ex. 3.01
var MacIE5 = ((Mac && navigator.appVersion.indexOf('MSIE 5',0) != -1) || (Mac && IE && VER > 4));
var MacIE4 = ((Mac && navigator.appVersion.indexOf('MSIE 4.',0) != -1));
var MacIE3 = ((Mac && navigator.appVersion.indexOf('MSIE 3.',0) != -1));
var MIE4 = (Mac && IE && VER == 4);
var WinIE = (Win && IE);
var IE6 = (ver.indexOf("MSIE 6")>-1);
var IE55 = (ver.indexOf("MSIE 5.5")>-1);
var IE5 = (ver.indexOf("MSIE 5")>-1);
var IE56 = (IE6||IE55||IE5);

var pageScrollTimer;

function pageScroll(toX,toY,frms,cuX,cuY) {
if (pageScrollTimer) clearTimeout(pageScrollTimer);
if (!toX || toX < 0) toX = 0;
if (!toY || toY < 0) toY = 0;
if (!cuX) cuX = 0 + getScrollLeft();
if (!cuY) cuY = 0 + getScrollTop();
if (!frms) frms = 6;

cuX += (toX - getScrollLeft()) / frms; if (cuX < 0) cuX = 0;
cuY += (toY - getScrollTop()) / frms; if (cuY < 0) cuY = 0;
var posX = Math.floor(cuX);
var posY = Math.floor(cuY);
window.scrollTo(posX, posY);
if (posX != toX || posY != toY) {
pageScrollTimer = setTimeout("pageScroll("+toX+","+toY+","+frms+","+cuX+","+cuY+")",16);
}
}

function sctoPageTop() { 
if (!MacIE3 && !MacIE4 && !NN && window.scrollTo || NN && (Vminor >= 4.75) && window.scrollTo) {
pageScroll(0,0,6);
} else {
location.hash = "pagetop";
}
}

function getScrollLeft() {
if ((navigator.appName.indexOf("Microsoft Internet Explorer",0) != -1)) {
return document.body.scrollLeft;
} else if (window.pageXOffset) {
return window.pageXOffset;
} else {
return 0;
}
}

function getScrollTop() {
if ((navigator.appName.indexOf("Microsoft Internet Explorer",0) != -1)) {
return document.body.scrollTop;
} else if (window.pageYOffset) {
return window.pageYOffset;
} else {
return 0;
}
}

function getScrollWidth() {
if ((navigator.appName.indexOf("Microsoft Internet Explorer",0) != -1)) {
return document.body.scrollWidth;
} else if (window.innerWidth) {
return window.innerWidth;
}
return 0;
}

function getScrollHeight() {
if ((navigator.appName.indexOf("Microsoft Internet Explorer",0) != -1)) {
return document.body.scrollHeight;
} else if (window.innerHeight) {
return window.innerHeight;
}
return 0;
}