function img_act(img, img_src)
{
  document.images[img].src = img_src;
}

function img_inact(img,srcs)
{
  document.images[img].src = srcs;
}

function submit_form(form_name) {
     var frm = document.getElementById(form_name);
     frm.submit();
}

function clear_form(form_name)
{
  var frm = document.getElementById(form_name).elements;
  var cnt = frm.length;
  for(a = 0; a < cnt; a++)
  {
    if(frm[a].type == "checkbox"  ) frm[a].checked = false;
    if(frm[a].type == "select-one") frm[a].selectedIndex = 0;
    if(frm[a].type == "select-multiple")
    {
      opt_cnt = frm[a].options.length;
      for(b = 0; b < opt_cnt; b++)  frm[a].options[b].selected = false;
    }
    //if (frm[a].type == "radio") frm[a].defaultChecked= true;
    if (frm[a].type == "radio") frm[a].checked = false;
    if (frm[a].type == "text") frm[a].value = "";
  }
}

function assign_value(obj, new_val)
{
  if (!obj) return;
  if (obj.type == "select-one")
  {
    for (var i=0; i < obj.options.length; i++)
    {
      if (obj.options[i].value == new_val)
      {
        obj.options[i].selected = true;
        break;
      }
    }
  }
}

// Removes leading and ending whitespaces
function trim(value){
	return value.replace(/^\s+|\s+$/g, "");
}

// Allow numbers only
function isNum(value){
	if(value.match(/^[0-9]+$/i)){
		return true;
	}else{
		return false;
	}
}

function validate(form1)
{
	conf = confirm("Are you sure you want to reset?");
	if (conf==true) form1.reset();
}