function collapseLSN() {
document.getElementById('lsn_AboutUs_sub').style.display="none";
document.getElementById('lsn_AboutUs_img').src="/images/plus.gif";
document.getElementById('lsn_ExistingTelephoneSystems_sub').style.display="none";
document.getElementById('lsn_ExistingTelephoneSystems_img').src="/images/plus.gif";
document.getElementById('lsn_ExistingTelephoneSystems_AdditionsandRelocations_sub').style.display="none";
document.getElementById('lsn_ExistingTelephoneSystems_AdditionsandRelocations_img').src="/images/plus.gif";
document.getElementById('lsn_ITManagedTelephoneSystems_sub').style.display="none";
document.getElementById('lsn_ITManagedTelephoneSystems_img').src="/images/plus.gif";
document.getElementById('lsn_NewTelephoneSystems_sub').style.display="none";
document.getElementById('lsn_NewTelephoneSystems_img').src="/images/plus.gif";
document.getElementById('lsn_VoiceMailandPagingSystems_sub').style.display="none";
document.getElementById('lsn_VoiceMailandPagingSystems_img').src="/images/plus.gif";
document.getElementById('lsn_ServiceandSupport_sub').style.display="none";
document.getElementById('lsn_ServiceandSupport_img').src="/images/plus.gif";
displayLSN();
}
function displayLSN() {
/*This function will be overriden by the calling page to display the correct location in the nav
it is included here to avoid a javascript error when the page does not override it*/
}	
	
function showHideLSN(img) {
	var x = img.src;
	var y = img.id;
	y=y.replace(/img/g,"sub");
	if(x.match("minus.gif")=="minus.gif"){
		document.getElementById(y).style.display='none';
		img.src='/images/plus.gif';
	}
	else if(x.match("plus.gif")=="plus.gif"){
		document.getElementById(y).style.display='block';
		img.src='/images/minus.gif';
	}
}