function Validate() {

    var invalid = " ";	

    if(document.forms[0].position.value=="")
        {alert("Please input position");
		 document.forms[0].position.focus();
		 return;	
		}
    if(document.forms[0].firstname.value=="")
        {alert("Please input your first name");
		 document.forms[0].firstname.focus();
		 return;	
		}	
    if(document.forms[0].lastname.value=="")
        {alert("Please input your last name");
		 document.forms[0].lastname.focus();
		 return;	
		}	
    if(document.forms[0].email.value=="")
        {alert("Please input your email");
		 document.forms[0].email.focus();
		 return;	
		}	
    if (document.forms[0].email.value.indexOf(invalid) > -1) {
         alert("Please check your Email Address, spaces are not allowed");
		 document.forms[0].email.focus();
         return;
        }
	else 
	{
	document.forms[0].submit();
	}
}