/** activepage variable **/
var tierone = "nothing";
var tiertwo = "nothing";

function navscript(show,level,tier){
var preactive = level
if (tier != 'tierone'){
	var tiervar = '2';
} else {
	var tiervar = '';
}
	/** //click on active link// **/
	if (preactive == show){ 
		/** Swap classes **/
		if (tier == 'tierone'){
		document.getElementById(preactive).className='redLink';
		}

		/** Swap css display property **/
		var preactivesub = preactive + '_sub';
		document.getElementById(preactivesub).style.display='none';

		/** Swap images **/
		var preactiveswitch = preactive + '_switch';
		document.getElementById(preactiveswitch).src='images/icon_plus' + tiervar +'.gif';

		/** update active variable **/
		preactive = 'nothing';
	}else{
		/** //no active link// **/
		if (preactive == 'nothing'){
			/** Swap classes **/
			if (tier == 'tierone'){
			document.getElementById(show).className='redLink';
			}
	
			/** Swap css display property **/
			var showsub = show + '_sub';
			document.getElementById(showsub).style.display='block';
	
			/** Swap images **/
			var showswitch = show + '_switch';
			document.getElementById(showswitch).src='images/icon_minus' + tiervar +'.gif';
	
			/** update active variable **/
			preactive = show;
		}else{
			/** //swap active link// **/
			/** Swap classes **/
			if (tier == 'tierone'){
			document.getElementById(preactive).className='redLink';
			document.getElementById(show).className='redLink';
			}
	
			/** Swap css display property **/
			var preactivesub = preactive + '_sub';
			document.getElementById(preactivesub).style.display='none';
	
			var showsub = show + '_sub';
			document.getElementById(showsub).style.display='block';
	
			/** Swap images **/
			var preactiveswitch = preactive + '_switch';
			document.getElementById(preactiveswitch).src='images/icon_plus' + tiervar +'.gif';
	
			var showswitch = show + '_switch';
			document.getElementById(showswitch).src='images/icon_minus' + tiervar +'.gif';
	
			/** update active variable **/
			preactive = show;
		}
	}
	if (tier == 'tierone'){
		tierone = preactive;
	}
	if (tier == 'tiertwo'){
		tiertwo = preactive;
	}
}