var ArCategories = new Array("presales","installation","program");
function changeFAQ(obj){
for (i=0; i<document.getElementsByTagName("LI").length;i++)
	if (document.getElementsByTagName("LI")[i].className==ArCategories[obj.value])
		document.getElementsByTagName("LI")[i].style.display = "block";
	else
		document.getElementsByTagName("LI")[i].style.display = "none";
}

function faqinit(){
	changeFAQ(document.getElementById("faqcategory"));
}