//menu_status = new Array(); 

function showHide_books(type){
	
	if(type == 'courier'){
		document.getElementById('postlocation1').disabled = true;
		document.getElementById('postlocation2').disabled = true;
		document.getElementById('postnumber').disabled = true;
		document.getElementById('courierlocation').disabled = false;
		document.getElementById('couriernumber').disabled = false;
		document.getElementById('collectnumber').disabled = true;
		
		document.getElementById('mymenu2').className = 'hide';
		document.getElementById('mymenu1').className = 'show';
		document.getElementById('mymenu3').className = 'hide';
		
			
	} else if(type == 'post'){
		document.getElementById('mymenu1').className = 'hide';
		document.getElementById('mymenu2').className = 'show';
		document.getElementById('mymenu3').className = 'hide';
		document.getElementById('postlocation1').disabled = false;
		document.getElementById('postlocation2').disabled = false;
		document.getElementById('postnumber').disabled = false;
		document.getElementById('courierlocation').disabled = true;
		document.getElementById('couriernumber').disabled = true;
		document.getElementById('collectnumber').disabled = true;
	}else if(type == 'collect'){
		document.getElementById('mymenu1').className = 'hide';
		document.getElementById('mymenu2').className = 'hide';
		document.getElementById('mymenu3').className = 'show';
		
		document.getElementById('postlocation1').disabled = true;
		document.getElementById('postlocation2').disabled = true;
		document.getElementById('postnumber').disabled = true;
		document.getElementById('courierlocation').disabled = true;
		document.getElementById('couriernumber').disabled = true;
		document.getElementById('collectnumber').disabled = false;
	}


	/*
    if (document.getElementById) {
    var switch_id = document.getElementById(theid);

        if(menu_status[theid] != 'show') {
           switch_id.className = 'show';
           menu_status[theid] = 'show';
        }else{
           switch_id.className = 'hide';
           menu_status[theid] = 'hide';
        }
    }
    */
}

function NewWindow(myPage, myName, Width, Height, Scroll, Resizable, Menubar) {
    var winTop = ((screen.height - Height) / 2);
    var winLeft= ((screen.width - Width) / 2);
    winProps = 'top=' +winTop+ ',left=' +winLeft+ ',height=' +Height+ ',width=' +Width+ ',Scrollbars=' +Scroll+ ',menubar=' +Menubar+ ',Resizable=' +Resizable+ ';'
    Win = window.open(myPage, myName, winProps);

        if (parseInt(navigator.appVersion) >= 4) {
            Win.window.focus(); //set focus to the window
        }
}

function validate_purchase(){
	
	var msg='';
	
		if(document.theform.Firstname.value =='' ){
			msg += 'Firstname\n';	
		}
		
		
		if(document.theform.Surname.value =='' ){
			msg += 'Surname\n';	
		}
		
		
		if(document.theform.Email.value =='' ){
			msg += 'Email\n';	
		}
		
		
		if(document.theform.Address1.value =='' ){
			msg += 'Address\n';	
		}
		
		
		if(document.theform.City.value =='' ){
			msg += 'City\n';	
		}
	
		if(document.theform.Country.value =='' ){
			msg += 'Country\n';	
		}
			
		if(document.theform.PostalCode.value =='' ){
			msg += "Postal Code\n";	
		}
		
		if(document.theform.Terms.checked ==false ){
			msg += "Terms & Conditions\n";	
		}
	 
	
	if(msg != ''){
		
		alert("You have left out the following required fields:\n-------------------------------------------------------\n" + msg);
		return false;	
	} else {
		return true;	
	}
	
}