window.onerror = new Function("return true;");


if (!Array.prototype.push) {
    Array.prototype.push = function () {
        var i;
        for (i = 0; j = arguments[i]; i++) this[this.length] = j;
        return this.length;
    }
}

IEmarginFix =
{
    run: null,

    kill: function () {
        clearTimeout("IEmarginFix.run");
    },

    init: function () {
        var valid = navigator.userAgent.toLowerCase().indexOf('mac') == -1 && document.all && document.getElementsByTagName && document.compatMode != "CSS1Compat";
        if (!valid) return;
        var ss = document.styleSheets;
        var auto, list, s, i, elm, expr, blk;
        auto = new Array();
        list = new Array();
        s = this.getRules();

        for (i = 0; i < s.length; i++)
            if (this.checkMargin(s[i][1]))
                auto.push(s[i][0]);

        for (i = 0; a = auto[i]; i++) {
            ss[ss.length - 1].addRule(a, "position : relative; left : expression((this.parentNode.offsetWidth - this.offsetWidth) / 2);");
        }
        this.list = auto;

        if (window.attachEvent) window.attachEvent("onload", IEmarginFix.checkInline);
    },

    checkInline: function () {
        var i, a, elm, blk, list = new Array(), auto = IEmarginFix.list;
        for (i = 0; a = auto[i]; i++) {
            if (a.charAt(0) == '.')
                list = list.concat(IEmarginFix.getClass(a.substring(1)));
            else if (a.charAt(0) == '#')
                list.push(document.all[a.substring(1)]);
            else
                list = list.concat(document.getElementsByTagName(a));
        }

        for (i = 0; i < list.length; i++) {
            elm = list[i];
            if (elm) {
                blk = IEmarginFix.getStyle(elm, "display");
                if (blk != "block" && (IEmarginFix.ie50 ? !IEmarginFix.ie50check(elm.tagName) : blk != "list-item")) // check for existence and block item
                {
                    elm.style.position = "static";
                    elm.style.left = "auto";
                }
            }
        }
    },

    checkMargin: function (str) {
        return (
			str.match(/margin\s*:\s*auto(;|$)/i)
			|| str.match(/margin\s*:\s*\S+\s+auto(;|$)/i)
			|| (str.match(/margin-left\s*:\s*auto(;|$)/i) && str.match(/margin-right\s*:\s*auto(;|$)/i))
			|| str.match(/margin\s*:\s*\S+\s+auto\s+\S+(;|$)/i)
			|| str.match(/margin\s*:\s*\S+\s+auto\s+\S+\s+auto(;|$)/i)
		);
    },

    /* these next few methods are basically for IE 5.0's bad interpretation of the "display" property
    (always returning "inline" unless explicitly set, even for block elements! */

    ie50: navigator.appVersion.toLowerCase().indexOf("msie 5.0") != -1,

    ie50check: function (tag) {
        var i;
        tag = tag.toUpperCase();
        for (i = 0; i < this.blockElms.length; i++)
            if (tag == this.blockElms[i])
                return true;
        return false;
    },

    blockElms: new Array("ADDRESS", "BLOCKQUOTE", "BODY", "CENTER", "COL", "COLGROUP", "DD", "DIR", "DIV", "DL", "DT", "FIELDSET", "FORM", "FRAME", "HN", "HR", "IFRAME", "LEGEND", "LI", "LISTING", "MARQUEE", "MENU", "OL", "P", "PLAINTEXT", "PRE", "TABLE", "TBODY", "TD", "TFOOT", "TH", "THEAD", "TR", "UL", "XMP"),

    /* end IE5.0 detect */

    getClass: function (cls) {
        var el, r, i;
        el = document.all ? document.all : document.getElementsByTagName('*');
        r = new Array();
        for (i = 0; el[i]; i++) if (el[i].className == cls) r.push(el[i]);
        if (r.length != 0) return r;
        else return null;
    },

    getRules: function (wh) // grabs all the styles
    {
        if (document.styleSheets && document.styleSheets.length) {
            var i, j, k, m, x, y, s = new Array(), is = true;
            for (i = 0; i < document.styleSheets.length; i++) {
                j = document.styleSheets.item(i);
                if (wh) is = (j.title || j.id) == wh;
                if (is) {
                    if (j.cssRules) // mozilla
                    {
                        for (k = 0; m = j.cssRules.item(k); k++) {
                            if (m.styleSheet && m.styleSheet.cssRules.length) // imported sheets
                                for (x = 0; y = m.styleSheet.cssRules.item(x); x++) s.push([y.selectorText, y.style.cssText]);
                            else s.push([m.selectorText, m.style.cssText])
                        }
                    }
                    else if (j.rules) // explorer
                    {
                        if (j.imports && j.imports.length) {
                            for (k = 0; m = j.imports[k]; k++)
                                for (x = 0; y = m.rules[x]; x++)
                                    s.push([y.selectorText, y.style.cssText]);
                        }
                        for (k = 0; m = j.rules[k]; k++)
                            s.push([m.selectorText, m.style.cssText]);
                    }
                }
                if (wh && is) break;
                else is = true;
            }
        }
        return s || null;
    },

    getStyle: function (obj, sty) {
        var sty2 = IEmarginFix.compactStyle(sty);
        var r = obj.style[sty2];
        if (r == '') {
            if (document.defaultView) r = document.defaultView.getComputedStyle(obj, '').getPropertyValue(sty);
            else r = obj.currentStyle[sty2];
        }
        if (r) return r; else return null;
    },

    compactStyle: function (str) {
        var s = str.split('-'); var o = [s[0]];
        for (i = 1; (j = s[i]); i++) { o[o.length] = j.charAt(0).toUpperCase(); o[o.length] = j.substring(1) };
        return o.join('');
    }
}

IEmarginFix.init();