function IsImageOk(img) {
	if(!img) return false;

     if (!img.complete) {
        return false;
    }

    if (typeof img.naturalWidth != "undefined" && img.naturalWidth == 0) {
        return false;
    }

    // No other way of checking: assume it's ok.
    return true;
}

function showLoginPopUp(){	
	document.getElementById('header_login_popup').style.display = 'block';
}
function closeLoginPopUp(){	
	document.getElementById('header_login_popup').style.display = 'none';
}


function hideText_1(){	
	if(document.getElementById('input_1').value == 'логин'){
		document.getElementById('input_1').value = '';
	}
}
function showText_1(){	
	if(document.getElementById('input_1').value == ''){
		document.getElementById('input_1').value = 'логин';
	}
}

function hideText_2(){	
	if(document.getElementById('input_2').value == 'пароль'){
		document.getElementById('input_2').value = '';
	}
}
function showText_2(){	
	if(document.getElementById('input_2').value == ''){
		document.getElementById('input_2').value = 'пароль';
	}
}

function hideText_3(){	
	if(document.getElementById('input_3').value == 'что искать'){
		document.getElementById('input_3').value = '';
	}
}
function showText_3(){	
        if(document.getElementById('input_3').value == ''){
		document.getElementById('input_3').value = 'что искать';
	}
}	

function activ_tab(id){
	if (id == '1'){
		document.getElementById('third').style.display = 'none';
		document.getElementById('second').style.display = 'none';
		document.getElementById('first').style.display = 'block';
		document.getElementById('tab1').style.background = '#FBF5E2';
		document.getElementById('tab1').style.borderBottom = '2px solid #FBF5E2';
		document.getElementById('tab1').style.color = '#000000';
		document.getElementById('tab2').style.background = '#EEE5D0';
		document.getElementById('tab2').style.borderBottom = '2px solid #99946E';
		document.getElementById('tab2').style.color = '#616161';
		document.getElementById('tab3').style.background = '#EEE5D0';
		document.getElementById('tab3').style.borderBottom = '2px solid #99946E';
		document.getElementById('tab3').style.color = '#616161';
	} if (id == '2'){
		document.getElementById('third').style.display = 'none';
		document.getElementById('second').style.display = 'block';
		document.getElementById('first').style.display = 'none';
		document.getElementById('tab1').style.background = '#EEE5D0';
		document.getElementById('tab1').style.borderBottom = '2px solid #99946E';
		document.getElementById('tab1').style.color = '#616161';
		document.getElementById('tab2').style.background = '#FBF5E2';
		document.getElementById('tab2').style.borderBottom = '2px solid #FBF5E2';
		document.getElementById('tab2').style.color = '#000000';
		document.getElementById('tab3').style.background = '#EEE5D0';
		document.getElementById('tab3').style.borderBottom = '2px solid #99946E';
		document.getElementById('tab3').style.color = '#616161';
	} if (id == '3'){
		document.getElementById('third').style.display = 'block';
		document.getElementById('second').style.display = 'none';
		document.getElementById('first').style.display = 'none';
		document.getElementById('tab1').style.background = '#EEE5D0';
		document.getElementById('tab1').style.borderBottom = '2px solid #99946E';
		document.getElementById('tab1').style.color = '#616161';
		document.getElementById('tab2').style.background = '#EEE5D0';
		document.getElementById('tab2').style.borderBottom = '2px solid #99946E';
		document.getElementById('tab2').style.color = '#616161';
		document.getElementById('tab3').style.background = '#FBF5E2';
		document.getElementById('tab3').style.borderBottom = '2px solid #FBF5E2';
		document.getElementById('tab3').style.color = '#000000';
	}if (id == '4'){
		document.getElementById('respor').style.display = 'block';}
}	

function search(id)
{
var n;
n = 1;
//if (document.getElementById('poisk').style.display == 'none') document.getElementById('poisk').style.display = 'inline';
//else                                                          document.getElementById('poisk').style.display = 'none';
}

function show_popup(){
 	var h=0;
	if (self.pageYOffset) {h=self.pageYOffset;}
	else if (document.documentElement && document.documentElement.scrollTop){h=document.documentElement.scrollTop;}
	else if (document.body) {h=document.body.scrollTop;}
	document.getElementById('popup_table2').style.top=(h+150)+'px';
     document.getElementById('popup').style.display='block';
     show_shadow();
 }
 function hide_popup(){
     document.getElementById('popup').style.display='none';
     hide_shadow();
 }
 
/* ----- shadow ----- */
function show_shadow(){
    var objOverlay = document.getElementById('overlay');
    var arrayPageSize = getPageSize();
    var arrayPageScroll = getPageScroll();

    objOverlay.style.height = (arrayPageSize[1] + 'px');
    objOverlay.style.width = (arrayPageSize[0] + 'px');
    objOverlay.style.display = 'block';
}
function getPageScroll(){
    var yScroll;
    if (self.pageYOffset) {
        yScroll = self.pageYOffset;
    } else if (document.documentElement && document.documentElement.scrollTop){  // Explorer 6 Strict
        yScroll = document.documentElement.scrollTop;
    } else if (document.body) {// all other Explorers
        yScroll = document.body.scrollTop;
    }
    arrayPageScroll = new Array('',yScroll) 
    return arrayPageScroll;
}
function getPageSize(){
    var xScroll, yScroll;
    if (window.innerHeight && window.scrollMaxY) {  
        xScroll = document.body.scrollWidth;
        yScroll = window.innerHeight + window.scrollMaxY;
    } else if (document.body.scrollHeight > document.body.offsetHeight){ // all but Explorer Mac
        xScroll = document.body.scrollWidth;
        yScroll = document.body.scrollHeight;
    } else { // Explorer Mac...would also work in Explorer 6 Strict, Mozilla and Safari
        xScroll = document.body.offsetWidth;
        yScroll = document.body.offsetHeight;
    }
    var windowWidth, windowHeight;
    if (self.innerHeight) { // all except Explorer
        windowWidth = self.innerWidth;
        windowHeight = self.innerHeight;
    } else if (document.documentElement && document.documentElement.clientHeight) { // Explorer 6 Strict Mode
        windowWidth = document.documentElement.clientWidth;
        windowHeight = document.documentElement.clientHeight;
    } else if (document.body) { // other Explorers
        windowWidth = document.body.clientWidth;
        windowHeight = document.body.clientHeight;
    }   
    if(yScroll < windowHeight){
        pageHeight = windowHeight;
    } else { 
        pageHeight = yScroll;
    }
    if(xScroll < windowWidth){  
        pageWidth = windowWidth;
    } else {
        pageWidth = xScroll;
    }
    arrayPageSize = new Array(pageWidth,pageHeight,windowWidth,windowHeight) 
    return arrayPageSize;
}

function hide_shadow(){
    objOverlay = document.getElementById('overlay');
    objOverlay.style.display = 'none';
}
function ChangeOpacity(id)
{
	document.getElementById('item_menu_'+id).style.opacity=1;
	document.getElementById('item_menu_'+id).style.filter="alpha(opacity=100)";
}
function ChangeOpacity2(id)
{
	document.getElementById('item_menu_'+id).style.opacity=0.4;
	document.getElementById('item_menu_'+id).style.filter="alpha(opacity=40)";
}

function isValidEmailR ( str )  {
if (( str. indexOf ( "@" , 4) == -1 ) && ( str. indexOf ( "." , 7) == -1 )){ 
alert("Не верен e-mail" ) ; 
document.forms.ank1.email.value="";
                                                                            }
                                 }
      
function checkFormR()
{
            objName = document.getElementById('name');
         if (objName.value == "")
         {
                 alert("Укажите имя");
                 return;
         }
		             objName = document.getElementById('surname');
         if (objName.value == "")
         {
                 alert("Укажите город");
                 return;
         }
		             objName = document.getElementById('tel');
         if (objName.value == "")
         {
                 alert("Укажите телефон");
                 return;
         }
		             objName = document.getElementById('email');
         if (objName.value == "")
         {
                 alert("Укажите e-mail");
                 return;
         }
          document.forms.ank1.submit();
          WinPrintSeite();
}