function trim(x){return x.replace(/\s+$|^\s+/g,'')}
function isPhone(x){return /^[0-9+\-() ]{8,}$/i.test(x)}
function isEmail(x){return /^[\w\.-]{2,}@[\w\.-]+\.[a-z]{2,5}$/i.test(x)}

function chkForm(t,e,err){
 err=false

 e=t.Email
 e.value=trim(e.value)
  if(!isEmail(e.value)){
   document.getElementById('e-email').style.display='block';err=true
  }else{
   document.getElementById('e-email').style.display='none';
  }

 e=t.Name
 e.value=trim(e.value)
 if(e.value=='' || e.value=='Name'){
   document.getElementById('e-name').style.display='block';err=true
  }else{
   document.getElementById('e-name').style.display='none';
  }

 e=t.Telephone
 e.value=trim(e.value)
 if(!isPhone(e.value)){
   document.getElementById('e-telephone').style.display='block';err=true
  }else{
   document.getElementById('e-telephone').style.display='none';
  }
 
 e=t.Enquiry
 e.value=trim(e.value)
 if(e.value=='' || e.value=='Enquiry...'){
   document.getElementById('e-enquiry').style.display='block';err=true
  }else{
   document.getElementById('e-enquiry').style.display='none';
  }

 return!err
}