var number_of_rows = 8;
var grandtotal = 0;

function roundNumber(innum){
	return Math.round(innum*100)/100
}

function calculaterow(rowID){
	var this_row_total = 0;
	var this_multiplier = eval('document.form1.multiplier_'+rowID+'.value');
	var this_qty = eval('document.form1.qty_'+rowID+'.value');
	if(isNaN(this_qty)==false){
		this_qty = Math.round(this_qty)
		if(this_qty<0){ this_qty = this_qty * -1 };
		eval('document.form1.qty_'+rowID+'.value='+this_qty);
		this_row_total = Number(this_multiplier)*Number(this_qty);
	}
	eval('document.form1.total_'+rowID+'.value='+roundNumber(this_row_total));
	document.getElementById('total_'+rowID+'_display').innerHTML = roundNumber(this_row_total);  // add in rounding function around this_row_total       = roundto(this_row_total,2)
	if(this_row_total==0){ eval('document.form1.qty_'+rowID+'.value=""') }
	return this_row_total;
	//alert(rowID+": "+this_row_total);
}

function setvisibility(elementName,setVisible){
	if(document.getElementById(elementName)){
		if(setVisible){
			document.getElementById(elementName).style.display='';
		} else {
			document.getElementById(elementName).style.display='none';
		}
	}
}

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

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 MM_findObj(n, d) { //v4.01
  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);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

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];}
}