var gradientshadow = {}
    gradientshadow.depth = 6 //Depth of shadow in pixels
    gradientshadow.containers = []

    gradientshadow.create = function() {
        var a = document.all ? document.all : document.getElementsByTagName('*')
        for (var i = 0; i < a.length; i++) {
            if (a[i].className == "shadow") {
                for (var x = 0; x < gradientshadow.depth; x++) {
                    var newSd = document.createElement("DIV")
                    newSd.className = "shadow_inner"
                    newSd.id = "shadow" + gradientshadow.containers.length + "_" + x //Each shadow DIV has an id of "shadowL_X" (L=index of target element, X=index of shadow (depth) 
                    if (a[i].getAttribute("rel"))
                        newSd.style.background = a[i].getAttribute("rel")
                    else
                        newSd.style.background = "black" //default shadow color if none specified
                    document.body.appendChild(newSd)
                }
                gradientshadow.containers[gradientshadow.containers.length] = a[i]
            }
        }
        gradientshadow.position()
        window.onresize = function() {
            gradientshadow.position()
        }
    }

    gradientshadow.position = function() {
        if (gradientshadow.containers.length > 0) {
            for (var i = 0; i < gradientshadow.containers.length; i++) {
                for (var x = 0; x < gradientshadow.depth; x++) {
                    var shadowdiv = document.getElementById("shadow" + i + "_" + x)
                    shadowdiv.style.width = gradientshadow.containers[i].offsetWidth + "px"
                    shadowdiv.style.height = gradientshadow.containers[i].offsetHeight + "px"
                    shadowdiv.style.left = gradientshadow.containers[i].offsetLeft + x + "px"
                    shadowdiv.style.top = gradientshadow.containers[i].offsetTop + x + "px"
                }
            }
        }
    }

    if (window.addEventListener)
        window.addEventListener("load", gradientshadow.create, false)
    else if (window.attachEvent)
        window.attachEvent("onload", gradientshadow.create)
    else if (document.getElementById)
        window.onload = gradientshadow.create