var navArray=new Array("single","multi","sales","commercial", "specialty", "community", "3d");
function navscript(show){
	if(document.getElementById(show).className=='expandNav'){ //CURRENTLY CLOSED
		for (x in navArray){ //CLOSE OTHER NAV ITEMS
			if(document.getElementById(navArray[x]).className!='expandNavOnPerm'){
				document.getElementById(navArray[x]).className='expandNav';
				var showsub = navArray[x] + '_sub';
				document.getElementById(showsub).style.display='none';
			}
		}
		 //EXPAND SELECTED NAV ITEM
		document.getElementById(show).className='expandNavOn';
		var showsub = show + '_sub';
		document.getElementById(showsub).style.display='block';
	}else{ //CURRENTLY OPEN
		if(document.getElementById(show).className!='expandNavOnPerm'){
			document.getElementById(show).className='expandNav';
			var showsub = show + '_sub';
			document.getElementById(showsub).style.display='none';
		}
	}
}