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

function howitworksPic() {
	if (!document.getElementById) return false;
	if (!document.getElementsByTagName) return false;
	if (!document.getElementById("howitworks")) return false;

	var gallery = document.getElementById("howitworks");
	var list = gallery.childNodes;
	for ( var i=0; i < list.length; i++) {
		list[i].className = "howitworkslist";
		var para = list[i].firstChild;
		para.className = "howitworkspicleft"
		i++;
		list[i].className = "howitworkslist";
		var para = list[i].firstChild;
		para.className = "howitworkspicright"
	}
	
}


addLoadEvent(howitworksPic);