function showStep(step){
	var stepArray = new Array("stepHome", "step1", "step2", "step3", "step4","step5","step6","step7");
	for(var i=0; i<stepArray.length; i++){
		thisStep = stepArray[i];
		if(thisStep == "stepHome"){
			document.getElementById("stepHome").style.display="block";
			document.getElementById("stepHome" + "_btn").style.visibility="hidden";
		}

		if(thisStep!=step){
			document.getElementById(thisStep).style.display="none";
			document.getElementById(thisStep + "_btn").style.visibility="visible";
		}else{
			document.getElementById(thisStep).style.display="block";
			document.getElementById(thisStep + "_btn").style.visibility="hidden";
		}
	}
}