function empty_box()
	{
	// to empty search bon on click
	document.search.q.value="";
	}

function validate_form ()
{
    valid = true;

    if( document.enquiry.Name.value == "" )
    {
        //alert ( "Please Enter Your Full Name" );
        document.getElementById("name_msg").innerHTML="<font color= red>Missing Required Field: Full Name</font>";
        valid = false;
    }else if(document.enquiry.Email.value == "" )
    {
    			document.getElementById("name_msg").innerHTML="";
                document.getElementById("email_msg").innerHTML="<font color= red>Missing Required Field: Email Address</font>";
        valid = false;
    }else if(document.enquiry.Organisation.value == "" )
    {
    	document.getElementById("email_msg").innerHTML="";
        document.getElementById("organisation_msg").innerHTML="<font color= red>Missing Required Field: Organisation Name</font>";
        valid = false;
    }else if(document.enquiry.contact_number.value == "" )
    {
    	document.getElementById("organisation_msg").innerHTML="";
        document.getElementById("contact_number_msg").innerHTML="<font color= red>Missing Required Field: Contact Number</font>";
        valid = false;
    }
    else if(document.enquiry.Enquiry.value == "" )
    {
    			document.getElementById("contact_number_msg").innerHTML="";
                document.getElementById("enquiry_msg").innerHTML="<font color= red>Missing Required Field: Enquiry</font>";
        valid = false;
    }
    else if(document.enquiry.TuringTest.value == "" )
    {			
    			document.getElementById("enquiry_msg").innerHTML="";
                document.getElementById("turning_msg").innerHTML="<font color= red>Missing Required Field: Security Code</font>";
        valid = false;
    }



    return valid;
}

function changeFontSize(inc)
 {
        //alert(' change to ' + inc);
        checkCookie();
        var p = document.getElementById('content');
                var size= getCookie('user_size');

   cnt=parseInt(size) + inc;
 //     alert(cnt);
        //p.style.fontSize = parseInt(size) + inc + 'px';
        if (cnt >= 11 && cnt < 16 )
        {
        p.style.fontSize = cnt + 'px';
        setCookie('user_size',cnt,365);
        }
        //p.style.fontSize=111;
        }

        
    function checkCookie()//call first
{
//alert('in ckeck');
user_size=getCookie('user_size');
if (user_size!=null && user_size!="")
  {
  //alert('Welcome again '+user_size+'!');
  }
  else
  {
  //user_size=prompt('Please enter font size:',"");
  user_size=12;
  //alert('inside else of check');

  if (user_size!=null && user_size!="")
    {
    setCookie('user_size',user_size,365);
    }
  }
}





function setCookie(c_name,value,expiredays)
{

 //alert('in setcookies')
 var exdate=new Date();exdate.setDate(exdate.getDate()+expiredays);
 document.cookie=c_name+ "=" +escape(value)+
 ((expiredays==null) ? "" : ";expires="+exdate.toGMTString());

}
    
    
function getCookie(c_name) //call second
{

//alert('in getcookies')
if (document.cookie.length>0)
  {
 // alert('inside if of getcookies');
  c_start=document.cookie.indexOf(c_name + "=");
  if (c_start!=-1)
    {
    c_start=c_start + c_name.length+1;
    c_end=document.cookie.indexOf(";",c_start);
    if (c_end==-1) c_end=document.cookie.length;
    return unescape(document.cookie.substring(c_start,c_end));
    }
  }
 // alert('outside if of getcookies');
return "";
}