function golens(val){
    if(!isNaN(val)){
        if(val == 0){
        	alert("Please select a lens to view")
        } 
        else{
        	location.href = "items.asp?mode=lensbyid&itemid=" + val
        } 
    }
}
function gosearch(){
    var term = document.forms['searchitems'].search.value
    if(term == ""){
    	alert("Please enter a lens name to search for")
    	document.forms['searchitems'].search.focus()
    } 
    else{
    	location.href = "items.asp?mode=lensbyname&sterm=" + term
    } 
}
function formCheck(frm){

    if (frm['name'].value=="") {
    
        alert("Please enter your Contact name.");
        frm['name'].focus();return false
        
    }

    if (frm.address.value=="") {
    
        alert("Please enter your Address.");
        frm.address.focus();return false
        
    }

    if (frm['phone'].value=="") {
    
        alert("Please enter your Phone Number.");
        frm['phone'].focus();return false
        
    }

    if (frm['email'].value.indexOf("@")<1 || 
        frm['email'].value.indexOf(".")<1 || 
        frm['email'].value.length<6) {
        
        alert("Sorry, your e-mail address is not valid.");
        frm['email'].focus();return false
        
    }

    return true
    
}

function formApptCheck(frm){

    if (frm.name.value=="") {
    
        alert("Please enter your full name.");
        frm.name.focus();return false
        
    }

    if (frm.dob.value=="") {
    
        alert("Please enter your Date of Birth.");
        frm.dob.focus();return false
        
    }

    if (frm.phone.value=="") {
    
        alert("Please enter your Phone Number.");
        frm.phone.focus();return false
        
    }

    if (frm.email.value.indexOf("@")<1 || 
        frm.email.value.indexOf(".")<1 || 
        frm.email.value.length<6) {
        
        alert("Sorry, your e-mail address is not valid.");
        frm.email.focus();return false
        
    }

    return true
    
}

function formEmailCheck(frm){

    if (frm.name.value=="") {
    
        alert("Please enter your Contact name.");
        frm.name.focus();return false
        
    }

    if (frm.address.value=="") {
    
        alert("Please enter your Address.");
        frm.address.focus();return false
        
    }

    if (frm['postcode'].value=="") {
    
        alert("Please enter your Post Code.");
        frm['postcode'].focus();return false
        
    }

    if (frm.country.value=="") {
    
        alert("Please choose your Country.");
        frm.country.focus();return false
        
    }

    if (frm['phone'].value=="") {
    
        alert("Please enter your Phone Number.");
        frm['phone'].focus();return false
        
    }

    if (frm['email'].value.indexOf("@")<1 || 
        frm['email'].value.indexOf(".")<1 || 
        frm['email'].value.length<6) {
        
        alert("Sorry, your e-mail address is not valid.");
        frm['email'].focus();return false
        
    }

    return true
    
}