function pishitepisma(whe, who) {window.open('mailto:'+who+'@'+whe, '_top')}
var this_index = new get_or_set_index ();
function get_or_set_index ()
{
	this.z_index=0;
	this.change_z_index_over = function (elem)
	{
		this.z_index = elem.style.zIndex;
		elem.style.zIndex=99;
	}
	this.change_z_index_out = function(elem)
	{
		elem.style.zIndex=this.z_index;
	}
}
function knopka(sender)
{
	switch(sender){
		case 'port_left':
			stepcarousel.stepBy('to_gal', -1);
			document.getElementById(sender+'_img').style.display = 'block';
			window.setTimeout("hide_block1()",600);
		break;							
		case 'port_right':
			stepcarousel.stepBy('to_gal', 1);
			document.getElementById(sender+'_img').style.display = 'block';
			window.setTimeout("hide_block2()",600);
		break;
	}
}
function hide_block1()
{ 
	document.getElementById('port_left_img').style.display = 'none';
}
function hide_block2()
{
	document.getElementById('port_right_img').style.display = 'none';
}
document.getElementsByClassName = function(cl) {
	var retnode = [];
	var myclass = new RegExp('\\b'+cl+'\\b');
	var elem = this.getElementsByTagName('*');
	for (var i = 0; i < elem.length; i++) {
		var classes = elem[i].className;
		if (myclass.test(classes)) retnode.push(elem[i]);
	}
	return retnode; // возвращает массив объектов
};
function SetNoActiv(num)
{
	document.getElementById("left_menu_marck"+num).src="img/left_menu_no_activ_marck.png";
}
function SetActive(num)
{
	document.getElementById("left_menu_marck"+num).src="img/left_menu_activ_marck.png";
}