// JavaScript Document
function openImage( uri, width, height){
	    var attrs = "width=" + width + ", height=" + height;
	    attrs += ", left=" + Math.floor((screen.availWidth-width)/2);
	    attrs += ", top=" + Math.floor((screen.availHeight-height)/2);
	    attrs += ", location=0, menubar=0, scrollbars=0, resizable=0, status=0, toolbar=0";
	    window.open(""+uri, null, attrs);
	  }