function echo(st)
{
	document.write(st);
}
function $(id)
{
	if(typeof(id)=='object')
	{
		return id;
	}
	return document.getElementById(id);
}
function select_all_checkbox(form,name,status, select_color, unselect_color)
{
	for (var i = 0; i < form.elements.length; i++) {
		if (form.elements[i].name == 'selected_ids[]') {
			if(status==-1)
			{
				form.elements[i].checked = !form.elements[i].checked;
			}
			else
			{
				form.elements[i].checked = status;
			}
			if(select_color)
			{
				if($(name+'_tr_'+form.elements[i].value))
				{
					$(name+'_tr_'+form.elements[i].value).style.backgroundColor=
						form.elements[i].checked?select_color:unselect_color;
				}
			}
		}
	}
}
function select_checkbox(form, name, checkbox, select_color, unselect_color)
{
	tr_color = checkbox.checked?select_color:unselect_color;
	if(typeof(event)=='undefined' || !event.shiftKey)
	{
		$(name+'_all_checkbox').lastSelected = checkbox;
		if(select_color && $(name+'_tr_'+checkbox.value))
		{
			$(name+'_tr_'+checkbox.value).style.backgroundColor=
				checkbox.checked?select_color:unselect_color;
		}
		update_all_checkbox_status(form, name);
		return;
	}
	//select_all_checkbox(form, name, false, select_color, unselect_color);
	
	var active = typeof($(name+'_all_checkbox').lastSelected)=='undefined'?true:false;
	
	for (var i = 0; i < form.elements.length; i++) {
		if (!active && form.elements[i]==$(name+'_all_checkbox').lastSelected)
		{
			active = 1;
		}
		if (!active && form.elements[i]==checkbox)
		{
			active = 2;
		}
		if (active && form.elements[i].id == name+'_checkbox') {
			form.elements[i].checked = checkbox.checked;
			$(name+'_tr_'+form.elements[i].value).style.backgroundColor=
				checkbox.checked?select_color:unselect_color;
		}
		if(active && (form.elements[i]==checkbox && active==1) || (form.elements[i]==$(name+'_all_checkbox').lastSelected && active==2))
		{
			break;
		}
	}
	update_all_checkbox_status(form, name);
}
function update_all_checkbox_status(form, name)
{
	var status = true;
	for (var i = 0; i < form.elements.length; i++) {
		if (form.elements[i].name == 'selected_ids[]' && !form.elements[i].checked) {
			status = false;
			break;
		}
	}
	$(name+'_all_checkbox').checked = status;
}
function make_date_input(input_name, input_value)
{
	echo('<div id="'+input_name+'_div"></div>');
	new Ext.form.DateField({
		name:input_name,
		id:input_name,
		value:input_value,
		renderTo:input_name+'_div',
		format:'d/m/Y'
	});
}