window.onload = resizeIfOdd;
window.onresize = forceBrowserEven;

function resizeIfOdd(){
if(navigator.userAgent.indexOf('Firefox/3') != -1 || navigator.userAgent.indexOf('WebKit') != -1 )
if(document.documentElement.clientWidth % 2 == 1)
window.resizeBy(-1,0);

};
function forceBrowserEven(){
window.setTimeout('resizeIfOdd()',5);
};