function changeImage() {  
	if (document.images)	{
		for (var i=0; i < changeImage.arguments.length; i+=2)	{
 		document[changeImage.arguments[i]].src = eval(changeImage.arguments[i+1] + ".src");
		}  
	}
}

function swapText(element,text){
	if (navigator.appName=="Netscape") {
		eval("document." + element + ".document").write(text);
	    eval("document." + element + ".document").close();              
	 } else {
		eval("document.all." + element).innerHTML=text;
	 }
}

function popup(url, name, w, h)
{
    var winl = (screen.width - w) / 2;
    var wint = (screen.height - h) / 2;
    winprops = 'height=' + h + ',width=' + w + ',top=' + wint + ',left=' + winl + ',toolbar=0,scrollbars=0,location=0,statusbar=0,menubar=0,resizable=0';
    win = window.open(url, name, winprops);
  	win.focus();
}