function fixLayout()
{
	var main_box = document.getElementById("main-part");
	if ( main_box ) {
		if ( document.getElementById("sub-part") ) main_box.style.width = '343px'
		else main_box.style.width = '537px';
	}
}
if (window.addEventListener){
	window.addEventListener("resize", fixLayout, false);
	window.addEventListener("load", fixLayout, false);
}
else if (window.attachEvent){
	window.attachEvent("onresize", fixLayout);
	window.attachEvent("onload", fixLayout);
}