// JavaScript Document

var onStep = NaN;

	function rollONstep(stepNum) {
		stepObj = new getObj('step_'+stepNum);
		
	}
	
	function rollOFFstep(stepNum) {
		if (onStep != stepNum){
			stepObj = new getObj('step_'+stepNum);
			
		}
	}
	
	function selectStep(stepNum) {
		if (onStep) stepOff(onStep);
		
		if(onStep == stepNum) {
			 stepOff(stepNum); 
			 onStep = NaN;
		}
		else{
			stepObj = new getObj('step_'+stepNum);
			stepObj.style.display = 'none';
			stepObj = new getObj('content_'+stepNum);
			stepObj.style.display = '';
			onStep = stepNum;
			
		}
	}
	
	function stepOff(stepNum) {
		stepObj = new getObj('step_'+stepNum);
		stepObj.style.display = '';
		stepObj = new getObj('step_'+stepNum);
		
		contentObj = new getObj('content_'+stepNum);
		contentObj.style.display = 'none'
	}
	
	function getObj(obj){
		if (document.getElementById)
			return document.getElementById(obj)
		else if (document.all)
			return document.all[obj]
	}