Behaviour.addLoadEventIf you are using MSIE or a Gecko-based browser, the functionality associated with the following button (via Behaviour) should be executed when clicked and before before the image below loads:
var Behaviour = (
...
addLoadEvent : function(func){
//Enable application of Behaviours when just the DOM is loaded
// (by Weston Ruter <http://linguiste.org>).
// See Dean Edwards's blog: http://dean.edwards.name/weblog/2005/09/busted/
//Only Gecko supports DOMContentLoaded
if(document.addEventListener && navigator.userAgent.indexOf('Gecko/') != -1){
document.addEventListener("DOMContentLoaded", function(){func()}, false);
}
//Only MSIE defers execution of scripts until DOM loaded
else if(/MSIE/.test(navigator.userAgent) && !window.opera){
var name = Math.random();
window[name] = function(){func()};
var script = document.createElement('script');
script.type = 'text/javascript';
script.src = "javascript:window[" + name + "](); " +
"window[" + name + "] = null; void(0);";
script.defer = true;
document.getElementsByTagName('head')[0].appendChild(script);
}
//fall back to using onload (original Behaviour code)
else {
var oldonload = window.onload;
if (typeof window.onload != 'function') {
window.onload = func;
} else {
window.onload = function() {
oldonload();
func();
}
}
}
}