// Caches the button rollover
if (document.images) {

	// Tab Menu Button Rollover
	mnu_btn_ab0=new Image();
	mnu_btn_ab0.src="images/mnu_btn_ab_tab.gif";
	mnu_btn_ab1=new Image();
	mnu_btn_ab1.src="images/mnu_btn_ab_tab1.gif";	
}