screen_width=window.innerWidth;

NN = (document.layers) ? true:false;
IE =(document.all)?true:false;

function arrow_on (number)
	{
	document[number].src="/_images/arrow.gif";
	}
function arrow_off(number)
	{
	document[number].src="/_images/transparent.gif"
	}
	
button_main_off=new Image(44,21);
button_main_off.src="/_images/button_home.gif";
button_main_on=new Image(44,21);
button_main_on.src="/_images/button_home_on.gif";

button_about_off=new Image(50,21);
button_about_off.src="/_images/button_about_eng.gif";
button_about_on=new Image(50,21);
button_about_on.src="/_images/button_about_eng_on.gif";

button_personal_off=new Image(160,21);
button_personal_off.src="/_images/button_recom_eng.gif";
button_personal_on=new Image(160,21);
button_personal_on.src="/_images/button_recom_eng_on.gif";

button_job_off=new Image(95,21);
button_job_off.src="/_images/button_clients_eng.gif";
button_job_on=new Image(95,21);
button_job_on.src="/_images/button_clients_eng_on.gif";

button_contacts_off=new Image(61,21);
button_contacts_off.src="/_images/button_contacts_eng.gif";
button_contacts_on=new Image(61,21);
button_contacts_on.src="/_images/button_contacts_eng_on.gif";


	function lightOn(imgName)
	{
		document[imgName].src=eval(imgName+"on.src")
	}
	
	function lightOff(imgName)
	{
		document[imgName].src=eval(imgName+"off.src")
	}


	function open_window(page)
	{
	window.open(page,'_new','width=600,height=400,resizable=no,status=no,menubar=no,toolbars=no,scrollbars=no')
	}