function SetFocus() {
  if (document.forms.length > 0) {
    var field = document.forms[0];
    for (i=0; i<field.length; i++) {
      if ( (field.elements[i].type != "image") && 
           (field.elements[i].type != "hidden") && 
           (field.elements[i].type != "reset") && 
           (field.elements[i].type != "submit") ) {

        document.forms[0].elements[i].focus();

        if ( (field.elements[i].type == "text") || 
             (field.elements[i].type == "password") )
          document.forms[0].elements[i].select();
        
        break;
      }
    }
  }
}

function confirmLink(theLink, confirmMsg)
{
    var is_confirmed = confirm(confirmMsg);

    return is_confirmed;
}

function CheckAll(id, checked) {
	count = document.all.length;
	for (i=0; i<count;i++) {
		if (document.all[i].id == id) 
			document.all[i].checked = checked;
	}
}

function CheckAllSub(id, checked) {
	var str;	
	var count = document.all.length;
	var len = id.length;

	for (i=0; i<count;i++) {
		str = document.all[i].id;
		if (str.substr(0,len) == id) 
			document.all[i].checked = checked;
	}
}

function ShowAll(id, bShow) {
	if (navigator.appName=='Netscape') {
		document.getElementById(id).style.left = 0; 
		document.getElementById(id).style.visibility=(bShow?"visible":"hidden");

	} else {
	count = document.all.length;
	for (i=0; i<count;i++) {
		if (document.all[i].id == id) 
			document.all[i].style.display = (bShow ? 'block' : 'none');
	}
}
}

function object_show(name, id)
{	
	count = document.all.length;
	for (i=0; i<count;i++) {
		if (document.all[name+i]) {
			document.all[name+i].style.display='none';
		}
	}
	if (document.all[name+id]) {
		document.all[name+id].style.display='block';
	}
}

function checkFields(formobj, $req, $desc){
	// name of mandatory fields
	var fieldRequired = $req;
	// field description to appear in the dialog box
	var fieldDescription = $desc;
	// dialog message
	var alertMsg = "Пожалуйста заполните следующие поля:\n";

	var l_Msg = alertMsg.length;

	for (var i = 0; i < fieldRequired.length; i++){
		var obj = formobj.elements[fieldRequired[i]];
		if (obj){
			switch(obj.type){
			case "select-one":
				if (obj.selectedIndex == -1 || obj.options[obj.selectedIndex].text == ""){
					alertMsg += " - " + fieldDescription[i] + "\n";
				}
				break;
			case "select-multiple":
				if (obj.selectedIndex == -1){
					alertMsg += " - " + fieldDescription[i] + "\n";
				}
				break;
			case "text":
			case "textarea":
				if (obj.value == "" || obj.value == null){
					alertMsg += " - " + fieldDescription[i] + "\n";
				}
				break;
			default:
				if (obj.value == "" || obj.value == null){
					alertMsg += " - " + fieldDescription[i] + "\n";
				}
			}
		}
	}
	
	if (alertMsg.length == l_Msg){
		return true;
	}else{
		alert(alertMsg);
		return false;
	}
}