function hideshow(__div)
{
  if(document.getElementById(__div).style.display == 'block')
    document.getElementById(__div).style.display = 'none';
  else
    document.getElementById(__div).style.display = 'block';
}

function gif_over(src) {
	src.children.tags('IMG')[0].src=src.children.tags('IMG')[0].src.replace('.gif','r.gif');
} 
function gif_out(src) {
	src.children.tags('IMG')[0].src=src.children.tags('IMG')[0].src.replace('r.gif','.gif');
}

	function open_popup(file,w,h)
	{
		helpWin = window.open(""+file+"", "Help", "height="+h+",width="+w+", scrollbars=yes, resizable=yes");
	}

	function checkall(val, id_val) 
	{
		dml = document.form2;
		len = dml.elements.length;
		var i = 0;
		var counter = 0;
		
		for( i = 0 ; i<len ; i++)
		{
			if (dml.elements[i].id == id_val)
			{
				dml.elements[i].checked = val;
			}
			counter++;
		}
		
		if (counter > 0) return true;
		else return false;
	}
	
	function AddFileForm()
	{
       var obj = document.getElementById('contaner');
       obj.innerHTML += "<input type=\"file\" name=\"userfile[]\" id=\"file1\"><br/>";
	        
       var obj = document.getElementById('contaner_u');
       obj.innerHTML = "<input type=\"submit\" name=\"submit[upload]\" value=\"Upload\" onclick=\"return confirmed('Загрузить рисунки')\">";
		
		dml = document.form1;	len = dml.elements.length;
		for( i = 0 ; i<len ; i++) {
			if (dml.elements[i].id == 'file1') { cur = i; break;}
		}
		document.form1.elements[cur].focus();
	}
	
	function confirmed(message, message2)
	{
		if (check_file('file1')) {
			if (!confirm(message)) return false;
			else return true;
		}
		else { 
			alert(message2);
			return false;
		}
	}
	
	function check_file(id_val) 
	{
		var i = 0;
		var counter = 0;
		var dm1;
		var len;
		
		dml = document.form1;
		len = dml.elements.length;

		for( i = 0 ; i<len ; i++)
		{
			if (dml.elements[i].id == id_val)
			{
				if (dml.elements[i].value !== '')
				counter++;
			}
		}
		if (counter > 0) return true;
		else return false;
	}
	
function check()
{
	dm1 = document.form1;
	if (dm1.name.value == '')
	{
		alert('Поле "Имя" пусто');
		return false;
	}

	else if (dm1.email.value == '') 
	{
		alert('Поле "Email" пусто');
		return false;
	}
	
	else if (dm1.subject.value == '') 
	{
		alert('Поле "Тема" пусто');
		return false;
	}
	
	else if (dm1.message.value == '') 
	{
		alert('ВВедите сообщение');
		return false;
	}

	else if (!confirm('Send feedback message?')) return false;
	else return true;
}