function increment(val,qty) {
	for(i=0; i<document.add_cart.elements.length; i++) {
		if(document.add_cart.elements[i].type=="text" && document.add_cart.elements[i].name==qty) {
			number = document.add_cart.elements[i].value - 0;
			if (!isNaN(number)) {
				document.add_cart.elements[i].value = number + 1;
			}
			else {
				document.add_cart.elements[i].value = 1;
			}
		}
	}
}

function decrement(val,qty) {
	
	for(i=0; i<document.add_cart.elements.length; i++) {
		if(document.add_cart.elements[i].type=="text" && document.add_cart.elements[i].name==qty) {
			number = document.add_cart.elements[i].value - 0;
			if (!isNaN(number)) {
				if (number < 1) {
					document.add_cart.elements[i].value = 1;
				}
				else {
					document.add_cart.elements[i].value = document.add_cart.elements[i].value - 0 - 1;
				}
			}
			else {
				document.add_cart[val].elementsy[val].value = 1;
			}
			if(document.add_cart.elements[i].value==0)
				document.add_cart.elements[i].value=1;
		}
	}
	
}

function valid_qty() {
	if(document.add_cart.qty_1.value=='' || isNaN(document.add_cart.qty_1.value) || document.add_cart.qty_1.value==0) {
		alert("Please enter a valid quantity");
		return false;
	}
	document.add_cart.submit();
}

function valid_attrib_qty() {
	var counter=0;
	for(i=0; i<document.add_cart.elements.length; i++) {
		if(document.add_cart.elements[i].type=="checkbox") {
			if(document.add_cart.elements[i].checked==true) {
				counter=1;
			}
		}
		if(document.add_cart.elements[i].type=="text") {
			if(document.add_cart.elements[i].value=='' || isNaN(document.add_cart.elements[i].value) || document.add_cart.elements[i].value==0) {
				alert("Please enter a valid quantity");
				return false;
			}
		}
	}
	
	if(counter==0) {
		alert("Please select an attribute");
		return false;
	}
	else {
		document.add_cart.submit();
	}
	
}


function valid_userdetails(formname) {
	if(formname.payment_mode.value=='') {
		alert("Please select a payment mode");
		return false;
	}
	if(formname.user_name.value=='') {
		alert("Please enter name");
        formname.user_name.focus();
		return false;
	}
	if(validate_email(formname.email.value) == false) {
		alert("Please enter a valid email address");
		formname.email.focus();
		return false;
	}
	if(formname.user_phone.value=='') {
		alert("Please enter phone number");
        formname.user_phone.focus();
		return false;
	}
	if(formname.address_1.value=='') {
		alert("Please enter your address");
        formname.address_1.focus();
		return false;
	}
	if(formname.country.value=='') {
		alert("Please select your country");
        formname.country.focus();
		return false;
	}
	if(formname.country.value=='97') {
		if(formname.county.value=='') {
			alert("Please select your county");
            formname.county.focus();
			return false;
		}
	}
	
	if(formname.elements['same_delivery_address'].checked==false) {
		if(formname.delivery_address_1.value=='') {
			alert("Please enter your delivery address");
            formname.delivery_address_1.focus();
			return false;
		}
		if(formname.delivery_country.value=='') {
			alert("Please select your delivery country");
            formname.delivery_country.focus();
			return false;
		}
		if(formname.delivery_country.value=='97') {
			if(formname.delivery_county.value=='') {
				alert("Please select your delivery county");
                formname.delivery_county.focus();
				return false;
			}
		}
	}

    // Ensure the personalisation section has been completed.
    if(formname.colour.value=='') {
		alert("Please select a personalisation colour.");
        formname.colour.focus();
		return false;
	}
    if(formname.font.value=='') {
		alert("Please select a personalisation font.");
        formname.font.focus();
		return false;
	}
    
    return true;
}

function validate_email(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("Invalid E-mail ID")
	   return false
	   }
	if(str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
		//alert("Invalid E-mail ID")
		return false
		}
	if(str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
		//alert("Invalid E-mail ID")
		return false
  		}
	if(str.indexOf(at,(lat+1))!=-1){
	    //alert("Invalid E-mail ID")
	    return false
	    }
	 if(str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
	    //alert("Invalid E-mail ID")
	    return false
		}
	 if(str.indexOf(dot,(lat+2))==-1){
	    //alert("Invalid E-mail ID")
	    return false
	    }
	 if(str.indexOf(" ")!=-1){
	    //alert("Invalid E-mail ID")
	    return false
		}
	 return true

}

function toggleVisibility(me){
	if (document.paynow.country.value=="97") {
		document.getElementById('hide1').style.display = ''; document.getElementById('hide1').style.visibility = 'visible';
	}
	else {
		document.getElementById('hide1').style.display = 'none'; document.getElementById('hide1').style.visibility = 'hidden'; 
	}
}

function toggleVisibility_delivery_address(me,fld){
	if (document.paynow.elements[fld].checked==false) {
		document.getElementById('hide2').style.display = ''; document.getElementById('hide2').style.visibility = 'visible';
	}
	else {
		document.getElementById('hide2').style.display = 'none'; document.getElementById('hide2').style.visibility = 'hidden'; 
		
	}
	
}

function toggleVisibility_delivery_country(me) {
	if (document.paynow.delivery_country.value=="97") {
		document.getElementById('hide3').style.display = ''; document.getElementById('hide3').style.visibility = 'visible';
	}
	else {
		document.getElementById('hide3').style.display = 'none'; document.getElementById('hide3').style.visibility = 'hidden'; 
	}
}