// JavaScript Document
// Added support for centering flashmovie on page



// ***Begin library code better placed in an external API***
// Set global variables for browser detection and reference building
var isNav, isIE
var coll = ""
var styleObj = ""
if (parseInt(navigator.appVersion) >= 4) {
    if (navigator.appName == "Netscape") {
        isNav = true
    } else {
        isIE = true
        coll = "all."
        styleObj = ".style"
    }
}
// Utility function returns rendered height of object content in pixels
function getObjHeight(obj) {
    if (isNav) {
        return obj.clip.height
    } else {
        return obj.clientHeight
    }
}
// Utility function returns rendered width of object content in pixels
function getObjWidth(obj) {
    if (isNav) {
        return obj.clip.width
    } else {
        return obj.clientWidth
    }
}
// Utility function returns the available content width space in browser window
function getInsideWindowWidth() {
    if (isNav) {
        return window.innerWidth
    } else {
        return document.body.clientWidth
    }
}
// Utility function returns the available content height space in browser window
function getInsideWindowHeight() {
    if (isNav) {
        return window.innerHeight
    } else {
        return document.body.clientHeight
    }
}
// Utility function to position an element at a specific x,y location
function shiftTo(obj, x, y) {
    if (isNav) {
        obj.moveTo(x,y)
    } else {
        obj.pixelLeft = x
        obj.pixelTop = y
    }
}
// ***End library code***

// Center an element named banner in the current window/frame, and show it
function centerIt() {
    // 'obj' is the positionable object
    var obj = eval("document." + coll + "Main" + styleObj)
    // 'contentObj' is the element content, necessary for IE 4 to return the
    //   true current width
    var contentObj = eval("document." + coll + "Main")
    var x = Math.round((getInsideWindowWidth()/2)-(getObjWidth(contentObj)/2))
    var y = Math.round((getInsideWindowHeight()/2)-(getObjHeight(contentObj)/2))

    shiftTo(obj, x, y)
    obj.visibility = "visible"
}
// Special handling for CSS-P redraw bug in Navigator 4
function handleResize() {
    if (isNav) {
        // causes extra re-draw, but must do it to get banner object color drawn
        location.reload()
    } else {
        centerIt()
    }
}