function GetXmlHttpObject() { 
	var objXMLHttp=null;
	if (window.XMLHttpRequest) {
		objXMLHttp=new XMLHttpRequest();
	} else if (window.ActiveXObject) {
		objXMLHttp=new ActiveXObject("Microsoft.XMLHTTP");
	}
	return objXMLHttp;
}	

var xmlHttpTax;

function updateTax(myState,myZip,myCountry,billship) {
	xmlHttpTax=GetXmlHttpObject()
	if (xmlHttpTax==null) {
		alert ("Browser does not support HTTP Request");
		return;
	} 
	var url="includes/ajax_tax_update.php";
	url=url+"?myState="+myState;
	url=url+"&myZip="+myZip;
	url=url+"&myCountry="+myCountry;
	url=url+"&billship="+billship;
	url=url+"&sid="+Math.random();
	
	//alert('url = '+url);
	
	xmlHttpTax.onreadystatechange=taxChanged;
	xmlHttpTax.open("GET",url,true);
	xmlHttpTax.send(null);
} 

function taxChanged() { 
	if (xmlHttpTax.readyState==4 || xmlHttpTax.readyState=="complete") { 		
		var taxVars=innerHTML=xmlHttpTax.responseText.split('|');		
		if(document.getElementById("allTaxSpan")!=null) {
			document.getElementById('allTaxSpan').innerHTML=taxVars[0];
		}
		if(document.getElementById("grandtotalSpan")!=null) {		
			document.getElementById('grandtotalSpan').innerHTML=taxVars[1];
		}
		if(document.getElementById("allTaxNameSpan")!=null) {
			document.getElementById('allTaxNameSpan').innerHTML=taxVars[2];
		}
	} 
} 
	
function shipSubmitButtonToggle(radioButtonId) {
	if(document.getElementById("shipSubmitButton")!=null) {
		//alert('document.getElementById(radioButtonId).checked = '+document.getElementById(radioButtonId).checked);
		if(document.getElementById(radioButtonId).checked == true) {
			enableElement('shipSubmitButton');
			toggleShipButtonClass('SHIPPING-OPTIONS-SUBMIT-BUTTON-ENABLED');
		}
	} else {
		//alert('shipSubmitButton is NULL');
	}
}

function toggleShipButtonClass(theClass) {
	//alert('toggleShipButtonClass = '+theClass);
	if(document.getElementById("shipSubmitButton")!=null) {
		document.getElementById('shipSubmitButton').className=theClass;
	}
}

function disableElement(disableMe) {
	if(document.getElementById(disableMe)!=null) {
		document.getElementById(disableMe).disabled=true;
	}
}

function enableElement(enableMe) {
	//alert('enableElement = '+enableMe);
	if(document.getElementById(enableMe)!=null) {
		document.getElementById(enableMe).disabled=false;
	}
}