function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function preload_menu() {
MM_preloadImages('images/m_alevecold_sinus_ov.gif','images/m_alevedifference_ov.gif','images/m_faqs_ov.gif','images/m_home_ov.gif','images/m_joint_ov.gif','images/m_products_ov.gif','images/m_resourcescenter_ov.gif');	
}

function ShowHideSubmenu(sm_id) {
	var linkID = sm_id;
	var submID = sm_id + '_sub';
	if (document.getElementById(submID).style.display == "none") {
		document.getElementById(submID).style.display = "block";
		document.getElementById(linkID).className = "m_active inner";
	}
	else {
		document.getElementById(submID).style.display = "none";
		document.getElementById(linkID).className = "ref inner";
	}
}