function generatePDF(invoice) {

	var clientName = invoice.client.name;
	var invoiceNumber = invoice.number;
	var issuedOn = invoice.issued_on;
	var amount = '$0.00';

	var marginLeft = 90;
	var headerTop = 140;
	var headerLeft = 360;
	var headerRight = 540;
	var rowHeight = 15;
	var footerLeft = 450;

	var tableTop = 240;
	var tableLeft = 60;
	var descriptionLeft = 140;
	var unitCostRight = 400;
	var qtyRight = 470;
	var lineTotalRight = 540;

	var doc = new jsPDF('p', 'pt');
	doc.setFont('Helvetica','');
	doc.setFontSize(10);

	if (invoice.image)
	{
		doc.addImage(invoice.image, 'JPEG', 30, 30, invoice.imageWidth, invoice.imageHeight);
	}

	
	doc.setDrawColor(200,200,200);
	doc.setFillColor(230,230,230);
	doc.rect(headerLeft - 6, headerTop + rowHeight + 4, headerRight - headerLeft + 12, rowHeight + 2, 'FD'); 

	var invoiceNumberX = headerRight - (doc.getStringUnitWidth(invoiceNumber) * doc.internal.getFontSize());
	var issuedOnX = headerRight - (doc.getStringUnitWidth(issuedOn) * doc.internal.getFontSize());	

	doc.setFontType("normal");
	doc.text(marginLeft, headerTop, clientName);
	doc.text(headerLeft, headerTop, 'Invoice #');
	doc.text(invoiceNumberX, headerTop, invoiceNumber);
	doc.text(headerLeft, headerTop + rowHeight, 'Invoice Date');
	doc.text(issuedOnX, headerTop + rowHeight, issuedOn);

	doc.setFontType("bold");
	doc.text(headerLeft, headerTop + (2 * rowHeight), 'Amount Due');


	doc.setDrawColor(200,200,200);
	doc.setFillColor(230,230,230);
	doc.rect(tableLeft - 6, tableTop - 12, headerRight - tableLeft + 12, rowHeight + 2, 'FD');

	var costX = unitCostRight - (doc.getStringUnitWidth('Unit Cost') * doc.internal.getFontSize());
	var qtyX = qtyRight - (doc.getStringUnitWidth('Quantity') * doc.internal.getFontSize());
	var totalX = lineTotalRight - (doc.getStringUnitWidth('Line Total') * doc.internal.getFontSize());

	doc.text(tableLeft, tableTop, 'Item');
	doc.text(descriptionLeft, tableTop, 'Description');
	doc.text(costX, tableTop, 'Unit Cost');
	doc.text(qtyX, tableTop, 'Quantity');
	doc.text(totalX, tableTop, 'Line Total');

	doc.setFontType("normal");
	var line = 1;
	var total = 0;
	
	for(var i=0; i<invoice.invoice_items.length; i++) {
		var item = invoice.invoice_items[i];
		var cost = formatNumber(item.cost);
		var qty = item.qty ? parseInt(item.qty, 10) + '' : '';
		
		var lineTotal = item.cost * item.qty;
		if (lineTotal) total += lineTotal;
		lineTotal = formatNumber(lineTotal);
		
		var costX = unitCostRight - (doc.getStringUnitWidth(cost) * doc.internal.getFontSize());
		var qtyX = qtyRight - (doc.getStringUnitWidth(qty) * doc.internal.getFontSize());
		var totalX = lineTotalRight - (doc.getStringUnitWidth(lineTotal) * doc.internal.getFontSize());
		var x = tableTop + (line * rowHeight) + 6;

		doc.text(tableLeft, x, item.product_key);
		doc.text(descriptionLeft, x, item.notes);
		doc.text(costX, x, cost);
		doc.text(qtyX, x, qty);
		doc.text(totalX, x, lineTotal);

		line += doc.splitTextToSize(item.notes, 200).length;
	}
	
	var x = tableTop + (line * rowHeight) + 14;
	doc.lines([[0,0],[headerRight-tableLeft+5,0]],tableLeft - 8, x);

	x += 16;
	doc.setFontType("bold");
	doc.text(footerLeft, x, 'Total');
	
	var total = formatMoney(total);
	var totalX = headerRight - (doc.getStringUnitWidth(total) * doc.internal.getFontSize());
	doc.text(totalX, x, total);		

	totalX = headerRight - (doc.getStringUnitWidth(total) * doc.internal.getFontSize());
	doc.text(totalX, headerTop + (2 * rowHeight), total);

	return doc;		
}

function formatNumber(num) {
	if (!num) {
		return "";
	}
	return parseFloat(num).toFixed(2);
}

function formatMoney(num) {
	num = parseInt(num);
    if (!num) return '$0.00';
	var p = num.toFixed(2).split(".");
    return "$" + p[0].split("").reverse().reduce(function(acc, num, i, orig) {
        return  num + (i && !(i % 3) ? "," : "") + acc;
    }, "") + "." + p[1];
}














/* Set the defaults for DataTables initialisation */
$.extend( true, $.fn.dataTable.defaults, {
	"sDom": "<'row-fluid'<'span6'l><'span6'f>r>t<'row-fluid'<'span6'i><'span6'p>>",
	"sPaginationType": "bootstrap",
	"oLanguage": {
		"sLengthMenu": "_MENU_ records per page"
	}
} );


/* Default class modification */
$.extend( $.fn.dataTableExt.oStdClasses, {
	"sWrapper": "dataTables_wrapper form-inline"
} );


/* API method to get paging information */
$.fn.dataTableExt.oApi.fnPagingInfo = function ( oSettings )
{
	return {
		"iStart":         oSettings._iDisplayStart,
		"iEnd":           oSettings.fnDisplayEnd(),
		"iLength":        oSettings._iDisplayLength,
		"iTotal":         oSettings.fnRecordsTotal(),
		"iFilteredTotal": oSettings.fnRecordsDisplay(),
		"iPage":          oSettings._iDisplayLength === -1 ?
			0 : Math.ceil( oSettings._iDisplayStart / oSettings._iDisplayLength ),
		"iTotalPages":    oSettings._iDisplayLength === -1 ?
			0 : Math.ceil( oSettings.fnRecordsDisplay() / oSettings._iDisplayLength )
	};
};


/* Bootstrap style pagination control */
$.extend( $.fn.dataTableExt.oPagination, {
	"bootstrap": {
		"fnInit": function( oSettings, nPaging, fnDraw ) {
			var oLang = oSettings.oLanguage.oPaginate;
			var fnClickHandler = function ( e ) {
				e.preventDefault();
				if ( oSettings.oApi._fnPageChange(oSettings, e.data.action) ) {
					fnDraw( oSettings );
				}
			};

			$(nPaging).addClass('pagination').append(
				'<ul class="pagination">'+
					'<li class="prev disabled"><a href="#">&laquo;</a></li>'+
					'<li class="next disabled"><a href="#">&raquo;</a></li>'+
				'</ul>'
			);
			var els = $('a', nPaging);
			$(els[0]).bind( 'click.DT', { action: "previous" }, fnClickHandler );
			$(els[1]).bind( 'click.DT', { action: "next" }, fnClickHandler );
		},

		"fnUpdate": function ( oSettings, fnDraw ) {
			var iListLength = 5;
			var oPaging = oSettings.oInstance.fnPagingInfo();
			var an = oSettings.aanFeatures.p;
			var i, ien, j, sClass, iStart, iEnd, iHalf=Math.floor(iListLength/2);

			if ( oPaging.iTotalPages < iListLength) {
				iStart = 1;
				iEnd = oPaging.iTotalPages;
			}
			else if ( oPaging.iPage <= iHalf ) {
				iStart = 1;
				iEnd = iListLength;
			} else if ( oPaging.iPage >= (oPaging.iTotalPages-iHalf) ) {
				iStart = oPaging.iTotalPages - iListLength + 1;
				iEnd = oPaging.iTotalPages;
			} else {
				iStart = oPaging.iPage - iHalf + 1;
				iEnd = iStart + iListLength - 1;
			}

			for ( i=0, ien=an.length ; i<ien ; i++ ) {
				// Remove the middle elements
				$('li:gt(0)', an[i]).filter(':not(:last)').remove();

				// Add the new list items and their event handlers
				for ( j=iStart ; j<=iEnd ; j++ ) {
					sClass = (j==oPaging.iPage+1) ? 'class="active"' : '';
					$('<li '+sClass+'><a href="#">'+j+'</a></li>')
						.insertBefore( $('li:last', an[i])[0] )
						.bind('click', function (e) {
							e.preventDefault();
							oSettings._iDisplayStart = (parseInt($('a', this).text(),10)-1) * oPaging.iLength;
							fnDraw( oSettings );
						} );
				}

				// Add / remove disabled classes from the static elements
				if ( oPaging.iPage === 0 ) {
					$('li:first', an[i]).addClass('disabled');
				} else {
					$('li:first', an[i]).removeClass('disabled');
				}

				if ( oPaging.iPage === oPaging.iTotalPages-1 || oPaging.iTotalPages === 0 ) {
					$('li:last', an[i]).addClass('disabled');
				} else {
					$('li:last', an[i]).removeClass('disabled');
				}
			}
		}
	}
} );


/*
 * TableTools Bootstrap compatibility
 * Required TableTools 2.1+
 */
if ( $.fn.DataTable.TableTools ) {
	// Set the classes that TableTools uses to something suitable for Bootstrap
	$.extend( true, $.fn.DataTable.TableTools.classes, {
		"container": "DTTT btn-group",
		"buttons": {
			"normal": "btn",
			"disabled": "disabled"
		},
		"collection": {
			"container": "DTTT_dropdown dropdown-menu",
			"buttons": {
				"normal": "",
				"disabled": "disabled"
			}
		},
		"print": {
			"info": "DTTT_print_info modal"
		},
		"select": {
			"row": "active"
		}
	} );

	// Have the collection use a bootstrap compatible dropdown
	$.extend( true, $.fn.DataTable.TableTools.DEFAULTS.oTags, {
		"collection": {
			"container": "ul",
			"button": "li",
			"liner": "a"
		}
	} );
}

/*
$(document).ready(function() {
	$('#example').dataTable( {
		"sDom": "<'row'<'span6'l><'span6'f>r>t<'row'<'span6'i><'span6'p>>",
		"sPaginationType": "bootstrap",
		"oLanguage": {
			"sLengthMenu": "_MENU_ records per page"
		}
	} );
} );
*/

function isStorageSupported() {
  try {
      return 'localStorage' in window && window['localStorage'] !== null;
  } catch (e) {
      return false;
  }
}