function imgOn(item_id, new_class){
	document.getElementById(item_id).className=new_class;
	}

function imgOff(item_id, new_class){
	document.getElementById(item_id).className=new_class;
	}



var desktop;

function popUpGalery(desktopURL,name) {
    desktop = window.open(desktopURL, name, 'toolbar=no, location=no, top=0, left=0, status=no, menubar=no, scrollbars=no, resizable=no, width='+ (10)+',height='+ (10));
    }

function popUp(filename) {
    desktop = window.open("popupimage.php?picture="+filename, "100", 'toolbar=no, location=no, top=0, left=0, status=no, menubar=no, scrollbars=no, resizable=no, width='+ (10)+',height='+ (10));
    }
	

function sendLotteryForm( error_message )
	{
		var d = document;
		var reg_email = /[0-9a-z_]+@[0-9a-z_^\.]+\.[a-z]{2,3}$/i;
		var reg_phone = /[0-9]{7,8}$/;
		var form_result = 1;
		
		if ( d.lottery.first_name.value == '' ) form_result = 0;
		if ( d.lottery.last_name.value == '' ) form_result = 0;	
		if ( !d.lottery.agree.checked ) form_result = 0;	
		if ( !reg_email.test(d.lottery.email.value) ) form_result = 0;
		if ( !reg_phone.test(d.lottery.phone.value) ) form_result = 0;
		
		if ( form_result == 0 ) alert(error_message)
			else d.lottery.submit();
	}