/* cookies.js */
/*
     Example File From "JavaScript and DHTML Cookbook"
     Published by O'Reilly & Associates
     Copyright 2003 Danny Goodman
*/

// utility function to retrieve a future expiration date in proper format;
// pass three integer parameters for the number of days, hours,
// and minutes from now you want the cookie to expire; all three
// parameters required, so use zeros where appropriate
function getExpDate(days, hours, minutes) {
    var expDate = new Date();
    if (typeof days == "number" && typeof hours == "number" && typeof hours == "number") {
        expDate.setDate(expDate.getDate() + parseInt(days));
        expDate.setHours(expDate.getHours() + parseInt(hours));
        expDate.setMinutes(expDate.getMinutes() + parseInt(minutes));
        return expDate.toGMTString();
    }
}

// utility function called by getCookie()
function getCookieVal(offset) {
    var endstr = document.cookie.indexOf (";", offset);
    if (endstr == -1) {
        endstr = document.cookie.length;
    }
    return unescape(document.cookie.substring(offset, endstr));
}

// primary function to retrieve cookie by name
function getCookie(name) {
    var arg = name + "=";
    var alen = arg.length;
    var clen = document.cookie.length;
    var i = 0;
    while (i < clen) {
        var j = i + alen;
        if (document.cookie.substring(i, j) == arg) {
            return getCookieVal(j);
        }
        i = document.cookie.indexOf(" ", i) + 1;
        if (i == 0) break; 
    }
    return null;
}

// store cookie value with optional details as needed
function setCookie(name, value, expires, path, domain, secure) {
    document.cookie = name + "=" + escape (value) +
        ((expires) ? "; expires=" + expires : "") +
        ((path) ? "; path=" + path : "") +
        ((domain) ? "; domain=" + domain : "") +
        ((secure) ? "; secure" : "");
}

// remove the cookie by setting ancient expiration date
function deleteCookie(name,path,domain) {
    if (getCookie(name)) {
        document.cookie = name + "=" +
            ((path) ? "; path=" + path : "") +
            ((domain) ? "; domain=" + domain : "") +
            "; expires=Thu, 01-Jan-70 00:00:01 GMT";
    }
}
function toggleFrame() {
    if (top.origCols) {
        showFrame();
        //setCookie("frameHidden", "false", getExpDate(180, 0, 0));
    } else {
        hideFrame();
        //setCookie("frameHidden", "true", getExpDate(180, 0, 0));
    }
}
function hideFrame() {
    var frameset = document.getElementById("masterFrameset");
    top.origCols = frameset.cols;
    frameset.cols = "0,0,0,0,0,*";
	
}

function showFrame() {
	if(top.origCols){
		document.getElementById("masterFrameset").cols = top.origCols;
	} else {
		document.getElementById("masterFrameset").cols = top.origCols = "0,0,0,0,20%,*";
	}
	
    top.origCols = null;
}

// set frame visibility based on previous cookie setting
function setFrameVis() {
    if (document.getElementById) {
        if (getCookie("frameHidden") == "true") {
            hideFrame()
        } else {
			showFrame()
        }
    }
}