function changeitem(selObj) {
  //delete all node
  var sel = document.all("selmenu");
  while(sel.options.length > 0) {
	sel.options.remove(sel.options.length - 1);
  } 
  //add "Select Model" node
  var newitem = document.createElement("OPTION");
  newitem.text = "Select Model";
  newitem.value = "Select Model";
  sel.options.add(newitem);
  //
  if (selObj.selectedIndex != 0) {
	sel.disabled = "";
	var getvalue = selObj.options[selObj.selectedIndex].value;
	var s = arraystr[getvalue];
	sarry = s.split(",");
	for(var i = 0; i < sarry.length; i++){
  			var newitem = document.createElement("OPTION");
			newitem.text = sarry[i];
			newitem.value = sarry[i];
			sel.options.add(newitem);
	}
  }else {
	sel.disabled = "disabled";
  }
  //sel.style.fontSize="11px";
  //sel.style.fontFamily="Arial"; 
}

function gotoPdf(selObj,f) {
  if (f) 
    var s = "..";
  else
    var s = ".";
  if (selObj.selectedIndex != 0) {
    var url = s + "/pdf/" + selObj.value + ".pdf";
	window.open(url, "PDF");
  }else alert("Warning\n\nPlease select a model!");
}

function gotoSeries(selObj,f) {
  if (f) 
    var s = "..";
  else
    var s = ".";  
  if (selObj.selectedIndex != 0) {
    var url = s + "/product/abt_product_" + selObj.value + "_specifications.asp";
	window.location = url;
  }else alert("Warning\n\nPlease select a Series!");
}

function PicResize() {
  var picObj = document.all.prdpic;
  var w, h, k, con;
  for(var i = 0; i < picObj.length; i++) {
	  var smallslot = picObj[i];
	  w = smallslot.width; 
	  h = smallslot.height; 
	  k = w/h; 
	  if (k >= 1) { 
		if (w >= 80) { 
		  w = 80; 
		  h = w/k; 
		}else {
		  h = 80; 
		  w = k*h; 
		}
	  }else { 
		h = 80; 
		w = k*h; 
	  }
	  smallslot.width = w;
  }
}

function show(Obj) {
  for(var i = 0; i < Obj.length; i++)
	Obj[i].style.display = "block";
}