function Check_Entries()
{
if (document.ContactForm.Email.value=="")
{alert("Please enter a valid email address")
document.ContactForm.Email.focus()
document.ContactForm.Email.select()
return false;
}
if (document.ContactForm.Email.value.length<6)
{alert("Please enter a valid email address")
document.ContactForm.Email.focus()
document.ContactForm.Email.select()
return false
}
if (echeck(document.ContactForm.Email.value)==false)
{alert("Please enter a valid email address")
document.ContactForm.Email.focus()
document.ContactForm.Email.select()
return false
}
if (document.ContactForm.FirstName.value=="")
{alert("Please enter your First Name")
document.ContactForm.FirstName.focus()
document.ContactForm.FirstName.select()
return false;
}
if (document.ContactForm.Surname.value=="")
{alert("Please enter your Surname")
document.ContactForm.Surname.focus()
document.ContactForm.Surname.select()
return false;
}
if (document.ContactForm.Country.value=="")
{alert("Please enter your Country")
document.ContactForm.Country.focus()
document.ContactForm.Country.select()
return false;
}
if (document.ContactForm.CommentType.value=="NOT_SELECTED")
{alert("To enable us to deal with your comments quickly please select the type of comment")
return false;
}
if (document.ContactForm.Comments.value=="")
{alert("Please enter your Comments")
document.ContactForm.Comments.focus()
document.ContactForm.Comments.select()
return false;
}
}

function echeck(str) {
		var at="@"
		var dot="."
		var lat=str.indexOf(at)
		var lstr=str.length
		var ldot=str.indexOf(dot)
		if (str.indexOf(at)==-1){
		   alert("Please enter a valid email address")
		   return false
		}
		if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
		   alert("Please enter a valid email address")
		   return false
		}
		if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
		    alert("Please enter a valid email address")
		    return false
		}
		 if (str.indexOf(at,(lat+1))!=-1){
		    alert("Please enter a valid email address")
		    return false
		 }
		 if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
		    alert("Please enter a valid email address")
		    return false
		 }
		 if (str.indexOf(dot,(lat+2))==-1){
		    alert("Please enter a valid email address")
		    return false
		 }
		 if (str.indexOf(" ")!=-1){
		    alert("Please enter a valid email address")
		    return false
		 }
 		 return true					
}