function prepareImageSwap(elem,mouseOver,mouseOutRestore,mouseDown,mouseUpRestore,mouseOut,mouseUp) { 
//this function needs to be called onload for body
//Do not delete these comments. 
//Non-Obtrusive Image Swap Script V1.1 by Hesido.com 
//Attribution required on all accounts 

//Name the base image [NAME]_nm.gif and the hover image [NAME]_hv.gif and let the script do it's thing
//for non img elements make sure that the element is classed with josh_image_swap
    if (typeof(elem) == 'string') elem = document.getElementById(elem); 
    if (elem == null) return; 
    var regg = /(.*)(_nm\.)([^\.]{3,4})$/ 
    var prel = new Array(), img, imgList, imgsrc, mtchd; 
    imgList = nodesToArray(elem.getElementsByTagName('img'));
    inputList = document.getElementsByClassName('josh_image_swap');
    imgList = imgList.concat(inputList);

	for (var i=0; img = imgList[i]; i++) { 
        if (!img.rolloverSet && img.src.match(regg)) { 
            mtchd = img.src.match(regg); 
            img.hoverSRC = mtchd[1]+'_hv.'+ mtchd[3]; 
            img.outSRC = img.src; 
            if (typeof(mouseOver) != 'undefined') { 
                img.hoverSRC = (mouseOver) ? mtchd[1]+'_hv.'+ mtchd[3] : false; 
                img.outSRC = (mouseOut) ? mtchd[1]+'_ou.'+ mtchd[3] : (mouseOver && mouseOutRestore) ? img.src : false; 
                img.mdownSRC = (mouseDown) ? mtchd[1]+'_md.' + mtchd[3] : false; 
                img.mupSRC = (mouseUp) ? mtchd[1]+'_mu.' + mtchd[3] : (mouseOver && mouseDown && mouseUpRestore) ? img.hoverSRC : (mouseDown && mouseUpRestore) ? img.src : false; 
                } 
            if (img.hoverSRC) {preLoadImg(img.hoverSRC); img.onmouseover = imgHoverSwap;} 
            if (img.outSRC) {preLoadImg(img.outSRC); img.onmouseout = imgOutSwap;} 
            if (img.mdownSRC) {preLoadImg(img.mdownSRC); img.onmousedown = imgMouseDownSwap;} 
            if (img.mupSRC) {preLoadImg(img.mupSRC); img.onmouseup = imgMouseUpSwap;} 
            img.rolloverSet = true; 
        } 
    }

    function preLoadImg(imgSrc) { 
        prel[prel.length] = new Image(); prel[prel.length-1].src = imgSrc;
    } 
} 
function imgHoverSwap() {this.src = this.hoverSRC;} 
function imgOutSwap() {this.src = this.outSRC;} 
function imgMouseDownSwap() {this.src = this.mdownSRC;} 
function imgMouseUpSwap() {this.src = this.mupSRC;}

/*Converts a nodelist into an array of nodes*/
function nodesToArray (nodes)
  {
    var nodeArray = new Array();
    for (var i=0; i < nodes.length; i++) 
    {
      nodeArray.push(nodes.item(i));
    }
    
    return nodeArray;
  }

/*Get's all elements with the supplied classname and returns them as an array of nodes*/
document.getElementsByClassName = function(cl) 
{
	var retnode = new Array();
	var myclass = new RegExp('\\b'+cl+'\\b');
	var elem = this.getElementsByTagName('*');
	for (var i = 0; i < elem.length; i++) 
	{
		var classes = elem[i].className;
		if (myclass.test(classes)) retnode.push(elem[i]);
	}
	return retnode;
};