function show(obj) {
obj.style.backgroundPosition="0px -320px"
}
function hide(obj) {
obj.style.backgroundPosition="0px 0px"
}
function showmenu(obj) {
obj.style.backgroundPosition="0px 0px"
}
function hidemenu(obj) {
obj.style.backgroundPosition="0px -41px"
}

function product_s(obj) {
	var opendiv = obj.id+"_d";
	var a = obj.id.substr(1,1);	
	document.getElementById("p1").className = "main ptitle";
	document.getElementById("p2").className = "main ptitle";
	document.getElementById("p3").className = "main ptitle";
	document.getElementById("p4").className = "main ptitle";
	document.getElementById("p5").className = "main ptitle";
	
	document.getElementById("p"+ a).className = "main ptitle2";
	if (parseInt(a) != 1)
	{
	     document.getElementById("p"+ String(parseInt(a)-1)).className = "main ptitle2";
	}
	
	document.getElementById("p1").style.backgroundPosition="0px 150px";
	document.getElementById("p2").style.backgroundPosition="0px 150px";
	document.getElementById("p3").style.backgroundPosition="0px 150px";
	document.getElementById("p4").style.backgroundPosition="0px 150px";
	document.getElementById("p5").style.backgroundPosition="0px 150px";	
	document.getElementById("p1_d").style.display = "none";
	document.getElementById("p2_d").style.display = "none";
	document.getElementById("p3_d").style.display = "none";
	document.getElementById("p4_d").style.display = "none";
	document.getElementById("p5_d").style.display = "none";
	document.getElementById(obj.id).style.backgroundPosition="0px 0px";
	document.getElementById(opendiv).style.display = "block";
	
}