function check() 
{
	if (document.MyForm.myName.value == "") 
	{
		alert("Please enter your name!");
		document.MyForm.myName.focus();
   		return false;
	}
	
	if (document.MyForm.myEmail.value == "") {
   		alert("Please enter your email address!");
		document.MyForm.myEmail.focus();
		return false;
	} else if ((document.MyForm.myEmail.value.indexOf("@") == -1) || (document.MyForm.myEmail.value.indexOf(".") == -1)) {
		alert("Email not in correct format");
		document.MyForm.myEmail.focus();
		return false;
	}

	if (document.MyForm.myPhone.value == "") {
   		alert("Please enter contact number!");
		document.MyForm.myPhone.focus();
   		return false;
	}
 
	if (document.MyForm.myCity.value == "") {
   		alert("Please enter city!");
		document.MyForm.myCity.focus();
   		return false;
	}

	if (document.MyForm.myExperience.value == "") {
   		alert("Please enter number of years of work experience!");
		document.MyForm.myExperience.focus();
   		return false;
	}
	
	
  	return true;
}


function Checkbox()
{
	if ( document.MyForm.mySession1.checked==true )
		{
			document.MyForm.mySession2.checked=true;
			document.MyForm.mySession3.checked=true;
			document.MyForm.mySession4.checked=true;
			
		}
		else if(document.MyForm.mySession1.checked==false)
		{
			
			document.MyForm.mySession2.checked=false;
			document.MyForm.mySession3.checked=false;
			document.MyForm.mySession4.checked=false;
			

		}
return true;
}