// +----------------------------------------------------------------+

// | Array functions that are missing in IE 5.0                     |

// | Author: Cezary Tomczak [www.gosu.pl]                           |

// | Free for any use as long as all copyright messages are intact. |

// +----------------------------------------------------------------+



// Removes the last element from an array and returns that element.

if (!Array.prototype.pop) {

    Array.prototype.pop = function() {

        var last;

        if (this.length) {

            last = this[this.length - 1];

            this.length -= 1;

        }

        return last;

    };

}



// Adds one or more elements to the end of an array and returns the new length of the array.

if (!Array.prototype.push) {

    Array.prototype.push = function() {

        for (var i = 0; i < arguments.length; ++i) {

            this[this.length] = arguments[i];

        }

        return this.length;

    };

}



// Removes the first element from an array and returns that element.

if (!Array.prototype.shift) {

    Array.prototype.shift = function() {

        var first;

        if (this.length) {

            first = this[0];

            for (var i = 0; i < this.length - 1; ++i) {

                this[i] = this[i + 1];

            }

            this.length -= 1;

        }

        return first;

    };

}



// Adds one or more elements to the front of an array and returns the new length of the array.

if (!Array.prototype.unshift) {

    Array.prototype.unshift = function() {

        if (arguments.length) {

            var i, len = arguments.length;

            for (i = this.length + len - 1; i >= len; --i) {

                this[i] = this[i - len];

            }

            for (i = 0; i < len; ++i) {

                this[i] = arguments[i];

            }

        }

        return this.length;

    };

}



// Adds and/or removes elements from an array.

if (!Array.prototype.splice) {

    Array.prototype.splice = function(index, howMany) {

        var elements = [], removed = [], i;

        for (i = 2; i < arguments.length; ++i) {

            elements.push(arguments[i]);

        }

        for (i = index; (i < index + howMany) && (i < this.length); ++i) {

            removed.push(this[i]);

        }

        for (i = index + howMany; i < this.length; ++i) {

            this[i - howMany] = this[i];

        }

        this.length -= removed.length;

        for (i = this.length + elements.length - 1; i >= index + elements.length; --i) {

            this[i] = this[i - elements.length];

        }

        for (i = 0; i < elements.length; ++i) {

            this[index + i] = elements[i];

        }

        return removed;

    };

}

// This is the implementation of SimpleSwap
// by Jehiah Czebotar
// Version 1.1 - June 10, 2005
// Distributed under Creative Commons
//
// Include this script on your page
// then make image rollovers simple like:
// <img src="/images/ss_img.gif" oversrc="/images/ss_img_over.gif">
//
// http://jehiah.com/archive/simple-swap
// 


function SimpleSwap(el,which){
  el.src=el.getAttribute(which || "origsrc");
}

function SimpleSwapSetup(){
  var x = document.getElementsByTagName("img");
  for (var i=0;i<x.length;i++){
    var oversrc = x[i].getAttribute("oversrc");
    if (!oversrc) continue;
      
    // preload image
    // comment the next two lines to disable image pre-loading
    x[i].oversrc_img = new Image();
    x[i].oversrc_img.src=oversrc;
    // set event handlers
    x[i].onmouseover = new Function("SimpleSwap(this,'oversrc');");
    x[i].onmouseout = new Function("SimpleSwap(this);");
    // save original src
    x[i].setAttribute("origsrc",x[i].src);
  }
}

var PreSimpleSwapOnload =(window.onload)? window.onload : function(){};
window.onload = function(){PreSimpleSwapOnload(); SimpleSwapSetup();}