function pageCount(){
	if(document.getElementById("pages")){
	var page = document.getElementById("pages");
	page.value = 1;
	page.onkeyup = function () { 
		if (isNaN(this.value) && this.value != "")
			this.value = 1;
			calcPrice();
	}
	page.onblur = function () {
		if (isNaN(this.value) || Number(this.value) < 1)
			this.value = 1;
			this.value = parseInt(this.value);
			calcPrice();
	}
	}
}

function calcPrice(){
	if(document.getElementById("order")){
	var numberpages =  document.forms["order"].pages.value;
	if(numberpages){
		numberpages = parseInt(numberpages);
		if(document.forms["order"].packagepro.checked == true){
			var sum = (numberpages - 1) * 69 + 138;
			document.getElementById("totalprice").innerHTML ="$"+sum;
			document.getElementById("tprice").value ="$"+sum;
		}
		if(document.forms["order"].packageadv.checked == true) {
			var sum = (numberpages - 1) * 99 + 198;
			document.getElementById("totalprice").innerHTML ="$"+sum;
			document.getElementById("tprice").value ="$"+sum;
		}
	}
	}
}
function init(){
	pageCount();
	calcPrice();
}
if (window.addEventListener)
	window.addEventListener("load", init, false);
else if (window.attachEvent){
	window.attachEvent("onload", init);
}