function ajaxpage(url, containerid){
	var page_request = false
	if (window.XMLHttpRequest) // if Mozilla, Safari etc
		page_request = new XMLHttpRequest()
	else if (window.ActiveXObject){ // if IE
		try {
		page_request = new ActiveXObject("Msxml2.XMLHTTP")
		} 
		catch (e){
			try{
				page_request = new ActiveXObject("Microsoft.XMLHTTP")
			}
			catch (e){}
		}
	}
	else
		return false
	
	page_request.onreadystatechange=function(){
	loadpage(page_request, containerid)
	}
	page_request.open('GET', url, true)
	page_request.send(null)
}

function loadpage(page_request, containerid){
	if (page_request.readyState == 4 && page_request.status==200)
		document.getElementById(containerid).innerHTML=page_request.responseText
}

function stringer(){
	return "<img src=http://cmm.ucsd.edu/images/rot_sci/sci3.jpg> <img src=http://cmm.ucsd.edu/images/rot_sci/sci2.jpg> <img src=http://cmm.ucsd.edu/images/rot_sci/sci1.jpg> <img src=http://cmm.ucsd.edu/images/rot_sci/sci4.jpg> <img src=http://cmm.ucsd.edu/images/rot_sci/sci5.jpg>"
}