/*For Dropdown Menu Navigation */
startList = function() {
                        if (document.all&&document.getElementById) {
                                    navRoot = document.getElementById("nav");
                                     for (i=0; i<navRoot.childNodes.length; i++) {
                                         node = navRoot.childNodes[i];
                                           if (node.nodeName=="LI") {
                                              node.onmouseover=function() {
                                                  this.className+=" over";
                                                }
                                           node.onmouseout=function()  {
                                           this.className=this.className.replace(" over", "");
                                        
                                      }
                                   }
                                 }
                            }
                        }
window.onload=startList;


/*For Menu Language*/
function show(){
 
 document.getElementById('menu_lang').style.display="block";
}  

function hide(){
 
 document.getElementById('menu_lang').style.display="none";

}

/*For tab switching*/
function features(){
  document.getElementById('benefits').style.display = "none";
  document.getElementById('system').style.display = "none";
  document.getElementById('support').style.display = "none";
  document.getElementById('features').style.display = "block";
}



function system(){
 document.getElementById('system').style.display = "block";
 document.getElementById('benefits').style.display = "none";
 document.getElementById('features').style.display = "none";
 document.getElementById('support').style.display = "none"; 
}

function support(){
 document.getElementById('benefits').style.display = "none";
 document.getElementById('features').style.display = "none";
 document.getElementById('system').style.display = "none";
 document.getElementById('support').style.display = "block";
} 
function benefits(){
 document.getElementById('benefits').style.display = "block";
 document.getElementById('features').style.display = "none";
 document.getElementById('system').style.display = "none";
 document.getElementById('support').style.display = "none";
} 


function SendForm() {

if (document.getElementById('name').value == "") {
    alert('Please, Enter Your Name');
    document.getElementById('name').focus() 
    return false;
   }
  else if (document.getElementById('mail').value == "") {
    alert('Please, Enter Email');
    document.getElementById('mail').focus() 
    return false;
   }
  else{     
  if (document.getElementById('mail').value.search(/[\-\_0-9a-zA-Z]+\@[\-\_0-9a-zA-Z]+\.[a-zA-Z]+/) == -1 )
    {
    alert( 'Incorrect e-mail address. Check, please.');
    document.getElementById('mail').focus();
    return false;
    }
   } 

 return true;
}