/*

Scrollable HTML table
http://www.webtoolkit.info/

*/

function ScrollableTable (tableEl, tableHeight, tableWidth) {

 this.initIEengine = function () {

 this.containerEl.style.overflowY = 'auto';
 if (this.tableEl.parentElement.clientHeight - this.tableEl.offsetHeight < 0) {
 this.tableEl.style.width = this.newWidth - this.scrollWidth +'px';
 } else {
 this.containerEl.style.overflowY = 'hidden';
 this.tableEl.style.width = this.newWidth +'px';
 }

 if (this.thead) {
 var trs = this.thead.getElementsByTagName('tr');
 for (x=0; x<trs.length; x++) {
 trs[x].style.position ='relative';
 trs[x].style.setExpression("top", "this.parentElement.parentElement.parentElement.scrollTop + 'px'");
 }
 }

 if (this.tfoot) {
 var trs = this.tfoot.getElementsByTagName('tr');
 for (x=0; x<trs.length; x++) {
 trs[x].style.position ='relative';
 trs[x].style.setExpression("bottom", "(this.parentElement.parentElement.offsetHeight - this.parentElement.parentElement.parentElement.clientHeight - this.parentElement.parentElement.parentElement.scrollTop) + 'px'");
 }
 }

 if (!this.tableEl.id) {
 this.tableEl.id = 'id' + Math.floor(Math.random()*1000);
 }
 eval("window.attachEvent('onresize', function () { document.getElementById('" + this.tableEl.id + "').style.visibility = 'hidden'; document.getElementById('" + this.tableEl.id + "').style.visibility = 'visible'; } )");
 };


 this.initFFengine = function () {
 this.containerEl.style.overflow = 'hidden';
 this.tableEl.style.width = this.newWidth + 'px';

 var headHeight = (this.thead) ? this.thead.clientHeight : 0;
 var footHeight = (this.tfoot) ? this.tfoot.clientHeight : 0;
 var bodyHeight = this.tbody.clientHeight;
 var trs = this.tbody.getElementsByTagName('tr');
 if (bodyHeight >= (this.newHeight - (headHeight + footHeight))) {
 this.tbody.style.overflow = '-moz-scrollbars-vertical';
 for (x=0; x<trs.length; x++) {
 var tds = trs[x].getElementsByTagName('td');
 tds[tds.length-1].style.paddingRight += this.scrollWidth + 'px';
 }
 } else {
 this.tbody.style.overflow = '-moz-scrollbars-none';
 }

 var cellSpacing = (this.tableEl.offsetHeight - (this.tbody.clientHeight + headHeight + footHeight)) / 4;
 this.tbody.style.height = (this.newHeight - (headHeight + cellSpacing * 2) - (footHeight + cellSpacing * 2)) + 'px';

 };

 this.tableEl = tableEl;
 this.scrollWidth = 17;

 this.originalHeight = this.tableEl.clientHeight;
 this.originalWidth = this.tableEl.clientWidth;

 this.newHeight = parseInt(tableHeight);
 this.newWidth = tableWidth ? parseInt(tableWidth) : this.originalWidth;

 this.tableEl.style.height = 'auto';
 this.tableEl.removeAttribute('height');

 this.containerEl = this.tableEl.parentNode.insertBefore(document.createElement('div'), this.tableEl);
 this.containerEl.appendChild(this.tableEl);
 this.containerEl.style.height = this.newHeight + 'px';
 this.containerEl.style.width = this.newWidth + 'px';


 var thead = this.tableEl.getElementsByTagName('thead');
 this.thead = (thead[0]) ? thead[0] : null;

 var tfoot = this.tableEl.getElementsByTagName('tfoot');
 this.tfoot = (tfoot[0]) ? tfoot[0] : null;

 var tbody = this.tableEl.getElementsByTagName('tbody');
 this.tbody = (tbody[0]) ? tbody[0] : null;

 if (!this.tbody) return;

 if (document.all && document.getElementById && !window.opera) this.initIEengine();
 if (!document.all && document.getElementById && !window.opera) this.initFFengine();


}

/**
*
*  Scrollable HTML table plugin for jQuery
*  http://www.webtoolkit.info/
*
**/

jQuery.fn.scrollable = function(tableHeight, tableWidth) {
    this.each(function(){
        if (jQuery.browser.msie || jQuery.browser.mozilla) {
            var table = new ScrollableTable(this, tableHeight, tableWidth);
        }
    });
};