// pop-up window

function openWindow(theURL,winName,features) { //v2.0
  window.open(theURL,winName,features);
}






ns4 = (document.layers)? true:false

ie4 = (document.all)? true:false

ns6 = (document.getElementById)? true:false





// Show/Hide functions for non-pointer layer/objects

function show(id) {

        if (ns4) document.layers[id].visibility = "show";

        else if (ie4) document.all[id].style.visibility = "visible";

		else if (ns6) eval ("document.getElementById('" + id + "').style.visibility = 'visible'");

}





function hide(id) {

        if (ns4) document.layers[id].visibility = "hide"

        else if (ie4) document.all[id].style.visibility = "hidden"

		else if (ns6) eval ("document.getElementById('" + id + "').style.visibility = 'hidden'");

}





// pre-load images

function preload(imgObj,imgSrc) {

	if (document.images) {

		eval(imgObj+' = new Image()')

		eval(imgObj+'.src = "'+imgSrc+'"')

	}

}





// change images

function changeImage(layer,imgName,imgObj) {

	if (document.images) {

		if (document.layers && layer!=null) eval('document.'+layer+'.document.images["'+imgName+'"].src = '+imgObj+'.src')

		else document.images[imgName].src = eval(imgObj+".src")

	}

}





// actual pre-load

        preload('imageA','imageA.gif')

        preload('imageB','imageB.gif')