function isNumeric(sText){
   var ValidChars = "0123456789.";
   var IsNumber=true;
   var Char;

 
   for (i = 0; i < sText.length && IsNumber == true; i++) 
      { 
      Char = sText.charAt(i); 
      if (ValidChars.indexOf(Char) == -1) 
         {
         IsNumber = false;
         }
      }
	  
   return IsNumber;
   
}
function isNumericOnly(sText){
   var ValidChars = "0123456789";
   var IsNumber=true;
   var Char;

 
   for (i = 0; i < sText.length && IsNumber == true; i++) 
      { 
      Char = sText.charAt(i); 
      if (ValidChars.indexOf(Char) == -1) 
         {
         IsNumber = false;
         }
      }
	  
   return IsNumber;
   
}
function isEmail(sEmail){
	if (/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/.test(sEmail)){
		return true;
	}else{
		return false;
	}
}

/*$(document).ready(function(){
	 $("form").submit(function() {
	var clean_value='';
	var error_message='The following errors occured: <ul>';
	var no_errors = true;
	if(this.id != 'cartlogin'){
	 
		
		
				  
			
		}
	});
});*/

function checkProduct(){
		
	if($("#quantity").val() < 1 || !isNumericOnly($("#quantity").val())){
		alert('Please enter a valid quantity');
		return false;
	}else{
		return true;
	}
	
}

function checkEmail(){
		if(document.getElementById("email").value != document.getElementById("email_confirm").value){
			alert("Email addresses do not match");
			return false;
		}else{
			return true;
		}
	}
	
function isPositiveInteger(val){
	if(val==null){return false;}
	if(val.length==0){return false;}
	for (var i = 0; i < val.length; i++) {
		var ch = val.charAt(i)
		if (ch < "0" || ch > "9") {
			return false
		}
	}
	return true;
}