addLoadEvent()

function addLoadEvent(func) {
    var oldonload = window.onload;
    if (typeof window.onload != 'function') {
        window.onload = func;
    } else {
        window.onload = function() {
            if (oldonload) {
                oldonload();
            }
            func();
        }
    }
}

function addContentOnLoad() { 
var inbrowsah=document.createElement('a');inbrowsah.setAttribute('id', 'inbrowsah'); inbrowsah.setAttribute('href', 'javascript:pseudo-controlwhatever.function()bang!'); document.body.appendChild(inbrowsah) }
addLoadEvent(addContentOnLoad);