function MM_findObj(n, d) { //v3.0
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document); return x;
}
/* Functions that swaps images. */
function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}
function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function formatAmt(amt, decplaces){
  var str = (Math.round(parseFloat(amt) * Math.pow(10,decplaces))).toString()
    
      while (str.length <= decplaces) {
             str = "0" + str
      }

  var decpoint = (str.length - decplaces)
  return str.substring(0,decpoint) + "." + str.substring(decpoint,str.length);
}



function RateChange(){
		document.aspnetForm.totCost.value = document.aspnetForm.Rate.value * document.aspnetForm.totAppUsage.value;		
		document.aspnetForm.totCost.value = formatAmt(document.aspnetForm.totCost.value, 2);
		
		if (document.aspnetForm.totCost.value == "N.aN")
			document.aspnetForm.totCost.value = formatAmt("0.00", 2);
		
}

function UpdateTotal(AppName, Value){
	var usage = 0;
	var inValue = 0;
	usage = document.aspnetForm.totAppUsage.value - 0.0;
	inValue = Value - 0.0;

	if (document.aspnetForm[AppName].checked == 1)
	{	
		document.aspnetForm.totAppUsage.value = usage + inValue;
		document.aspnetForm.totAppUsage.value = formatAmt(document.aspnetForm.totAppUsage.value, 1);
		document.aspnetForm.totCost.value = document.aspnetForm.Rate.value * document.aspnetForm.totAppUsage.value;
		document.aspnetForm.totCost.value = formatAmt(document.aspnetForm.totCost.value, 2);
		
		if (document.aspnetForm.totCost.value == "N.aN")
			document.aspnetForm.totCost.value = formatAmt("0.00", 2);
	}	
	else
	{
		document.aspnetForm.totAppUsage.value = usage - inValue;
		document.aspnetForm.totAppUsage.value = formatAmt(document.aspnetForm.totAppUsage.value, 1);
		document.aspnetForm.totCost.value = document.aspnetForm.Rate.value * document.aspnetForm.totAppUsage.value;
		document.aspnetForm.totCost.value = formatAmt(document.aspnetForm.totCost.value, 2);
		
		if (document.aspnetForm.totCost.value == "N.aN")
			document.aspnetForm.totCost.value = formatAmt("0.00", 2);
	}
}