// JavaScript Document

function isSTR(val){
        var str = val;
        // Return false if characters are not a-z, A-Z, or a space.
        for (var i = 0; i < str.length; i++){
                var ch = str.substring(i, i + 1);
                if (((ch < "a" || "z" < ch) && (ch < "A" || "Z" < ch)) && ch != ' '){
                return 1;
                }
        }
        return 0;
}

function isNum(str)
{
        // Return false if characters are not '0-9' or '.' .
        for (var i = 0; i < str.length; i++)
        {
                var ch = str.substring(i, i + 1);
                if ((ch < "0" || "9" < ch) && ch != '.' && ch != '-')
                {
                        return 1;
                }
        }
        return 0;
}



function check_form()
{
	
	var Frame_Model=document.order_safety_glasses_form.Frame_Model.value;
	var Frame_Color=document.order_safety_glasses_form.Frame_Color.value;
	var Frame_Size=document.order_safety_glasses_form.Frame_Size.value;
	var Frame_Qty=document.order_safety_glasses_form.Frame_Qty.value;
	
	var Name=document.order_safety_glasses_form.Name.value;
	var Address=document.order_safety_glasses_form.Address.value;
	var City=document.order_safety_glasses_form.City.value;
	var State=document.order_safety_glasses_form.State.value;
	var Zip=document.order_safety_glasses_form.Zip.value;
	var Country=document.order_safety_glasses_form.Country.value;
	var Phone=document.order_safety_glasses_form.Phone.value;
	var Email=document.order_safety_glasses_form.Email.value;
	   
	var error_message="There are following errors while Processing :\n";
	var error=0;
	  

	if((Frame_Model=="") || (Frame_Color="") || (Frame_Size=="") || (Frame_Qty==""))	{
	error_message=error_message+"Please enter Frame Details (ex. Frame Model, Frame Colour and Frame Size) \n";
		  error = 1;
	}
	
	if(Name=="")	{
	error_message=error_message+"Please enter Name \n";
		  error = 1;
	}
	
	if(Address=="")	{
	error_message=error_message+"Please enter Address \n";
		  error = 1;
	}
	
	
	if(City=="")	{
	error_message=error_message+"Please enter City \n";
		  error = 1;
	}

	if (error == 1)	{
	alert(error_message);
	return false;
	} 
	else {
	document.prescription_form.action="prescription_process.php";
	}
		
}