function el(id)
{
    return document.getElementById(id);
}

function selectFaq(faqNo)
{
    for (i=1;i<=12;i++)
    {
        if (i == faqNo)
        {
            el('faqLink' + i).className = "faqLinkSelected"
        }
        else
        {
            
            el('faqLink' + i).className = "faqLink"
            
        }
    }
}



 function checkForm()
    {
        errMsg = ""; 
        
        if (el("forename1").value == "")
        {
            errMsg+= "\n   - You must provide your name."
        }    
        if (el("surname1").value == "")
        {
            errMsg+= "\n   - You must provide a Surname."
        }   
        
        if (el("email1").value == "")
        {
            errMsg+= "\n   - You must provide a valid email address."
        }   
        else
        {
        if (isEmail(el("email1").value))
        {
            errMsg+= "\n   - You must provide a valid email address."
        } 
        }

        if (el("forename2").value != "")
        {
       
        if (el("surname2").value == "")
        {
            errMsg+= "\n   - You must provide a Surname for attendee 2."
        }   
        
        if (el("email2").value == "" || isEmail(el("email2").value))
        {
            errMsg+= "\n   - You must provide a valid email address for attendee 2."
        }   
       
        }    

        
        if (el("forename3").value != "")
        {
       
        if (el("surname3").value == "")
        {
            errMsg+= "\n   - You must provide a Surname for attendee 3."
        }   
        
        if (el("email3").value == "" || isEmail(el("email3").value))
        {
            errMsg+= "\n   - You must provide a valid email address for attendee 3."
        }   
       
        }  
        
        
        if (el("forename4").value != "")
        {
       
        if (el("surname4").value == "")
        {
            errMsg+= "\n   - You must provide a Surname for attendee 4."
        }   
        
        if (el("email4").value == "" || isEmail(el("email4").value))
        {
            errMsg+= "\n   - You must provide a valid email address for attendee 4."
        }   
       
        }  
        
        
        if (el("companyname").value == "")
        {
            errMsg+= "\n   - You must provide a Company Name."
        }  
        
        if (el("add1").value == "")
        {
            errMsg+= "\n   - You must provide Address 1."
        }  
        
        if (el("town").value == "")
        {
            errMsg+= "\n   - You must provide a Town."
        }  
            
        if (el("telephone").value == "")
        {
            errMsg+= "\n   - You must provide a Telephone Number."
        }  
      
        if (el("postcode").value == "")
        {
            errMsg+= "\n   - You must provide a Postcode."
        }  
        
         
        if (errMsg != "")
        {
            alert("Your form could not be sent because:\n"  +errMsg)
            return false;
        }
  
        return true;
        
        
        
        
        
        
    }
    
    
    
function isEmail(str) {
   return !(str.indexOf(".") > 2) && (str.indexOf("@") > 0);
 
}