/* $Id: basicFunctions.js 166 2005-08-23 07:04:32Z neilm $ */

/*****************************************************
 * Courtesy of Dreamweaver (http://www.macromedia.com)
 *
 *****************************************************/

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_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_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];}
}
function MM_showHideLayers() { //v6.0
  var i,p,v,obj,args=MM_showHideLayers.arguments;
  for (i=0; i<(args.length-2); i+=3) if ((obj=MM_findObj(args[i]))!=null) { v=args[i+2];
    if (obj.style) { obj=obj.style; v=(v=='show')?'visible':(v=='hide')?'hidden':v; }
    obj.visibility=v; }
}
function MM_changeProp(objName,x,theProp,theValue) { //v6.01 -- Bug Fix by NM
  var obj = MM_findObj(objName);
  if (obj && (theProp.indexOf("style.")==-1 || obj.style)){
    if (theValue != "" && (theValue == true || theValue == false))
      eval("obj."+theProp+"="+theValue);
    else eval("obj."+theProp+"='"+theValue+"'");
  }
}
function MM_setTextOfLayer(objName,x,newText) { //v4.01
  if ((obj=MM_findObj(objName))!=null) with (obj)
    if (document.layers) {document.write(unescape(newText)); document.close();}
    else innerHTML = unescape(newText);
}

/*****************************************************
 * Courtesy of Caboodle IT (http://www.caboodleit.com)
 *
 *****************************************************/

 function checkEnter(e) {

	var characterCode = (e && e.which) ? e.which : e.keyCode;
	var sourceObject = (e.srcElement && e.srcElement.type) ? e.srcElement : e.target;

	//assess if it the form that is in focus or an element (excl. textarea)
	if (sourceObject) {
		if (characterCode == 13 && sourceObject.type!="textarea") {
			if (sourceObject.form.onsubmit()) sourceObject.form.submit();
			return false;
		}
	}

	return true; 
}

var wPopUp = null;

function existPopUp() {
  if (!wPopUp) {
    return false;
  } else {
    if (!wPopUp.closed) {
      return true;
    } else {
      wPopUp = null;
      return false;
    }
  }
}

function closePopUp() {
  if (window.wPopUp) {
    wPopUp.close();
    wPopUp = null;
  }
}

function openPopUp(url, name, width, height, args) {
	if (args!="") args = ", "+args;

  if (!wPopUp) {
    // not yet defined
    wPopUp = window.open(url, name, args);
  } else {
    //has been defined
    if (!wPopUp.closed) {
      wPopUp.focus();
    } else {
      wPopUp = window.open(url, name, args);;
    }
  }
}

function selectSort(obj) {
	var o = new Array();

	for (var i=0; i<obj.options.length; i++)
		o[o.length] = new Option(obj.options[i].text, obj.options[i].value, obj.options[i].defaultSelected, obj.options[i].selected);
	
	if (o.length==0) return;
	o = o.sort( 
		function(a,b) { 
			if ((a.text+"") < (b.text+"")) return -1;
			if ((a.text+"") > (b.text+"")) return 1;
			return 0;
		} 
	);

	for (var i=0; i<o.length; i++)
		obj.options[i] = new Option(o[i].text, o[i].value, o[i].defaultSelected, o[i].selected);
}

function selectMove(objFrom, objTo) {
	if (typeof objFrom == "string") objFrom = MM_findObj(objFrom);
	if (typeof objTo == "string") objTo = MM_findObj(objTo);

	for (var i=0; i<objFrom.options.length; i++)
		if (objFrom.options[i].selected)
			objTo.options[objTo.length] = new Option(objFrom.options[i].text, objFrom.options[i].value);
	
    for (var i=(objFrom.options.length-1); i>=0; i--)
        if (objFrom.options[i].selected)
            objFrom.options[i] = null;
	
	if (arguments[2]==true) selectSort(objTo);

	if (obj = MM_findObj(objTo.name+'[]')) obj.value = selectList(objTo);
	if (obj = MM_findObj(objFrom.name+'[]')) obj.value = selectList(objFrom);
}

function swapOptions(obj,i,j) {
	var o = obj.options;
	var i_selected = o[i].selected;
	var j_selected = o[j].selected;
	var temp = new Option(o[i].text, o[i].value, o[i].defaultSelected, o[i].selected);
	var temp2= new Option(o[j].text, o[j].value, o[j].defaultSelected, o[j].selected);
	o[i] = temp2;
	o[j] = temp;
	o[i].selected = j_selected;
	o[j].selected = i_selected;
	}

function selectMoveUp(obj) {
	if (typeof obj == "string") obj = MM_findObj(obj);

	if (obj && obj.options) {
		for (i=0; i<obj.options.length; i++) {
			if (obj.options[i].selected) {
				if (i != 0 && !obj.options[i-1].selected) {
					swapOptions(obj,i,i-1);
					obj.options[i-1].selected = true;
				}
			}
		}
	}
}

function selectMoveDown(obj) {
	if (typeof obj == "string") obj = MM_findObj(obj);

	if (obj && obj.options) {
		for (i=obj.options.length-1; i>=0; i--) {
			if (obj.options[i].selected) {
				if (i != (obj.options.length-1) && ! obj.options[i+1].selected) {
					swapOptions(obj,i,i+1);
					obj.options[i+1].selected = true;
				}
			}
		}
	}
}

function selectList(obj) {
	if (typeof obj == "string") obj = MM_findObj(obj);

	var retVal = "";
	
	for (var i=0; i<obj.options.length; i++) {
		if (i>0) retVal += ",";
		retVal += obj.options[i].value;
	}

	return retVal;
}

function tableAddRow(tbl) {

	if (typeof tbl == "string") tbl = MM_findObj(tbl);
	
	var toCopy = tbl.rows[tbl.rows.length-1];
    var row = tbl.insertRow(tbl.rows.length);

	for (var i = 0; i < toCopy.cells.length; i++) {
		var cell = row.insertCell(i);
		for (var j = 0; j < toCopy.cells[i].childNodes.length; j++) {
			var el = toCopy.cells[i].childNodes[j].cloneNode(true);
			cell.appendChild(el);
		}
	}
}

function tableDelRow(tbl, row) {
	if (typeof tbl == "string") tbl = MM_findObj(tbl);
	if (row < (tbl.rows.length)) tbl.deleteRow(row);
}


/*******Function to add a bookmark***************************/

function addToFavorites() {
	if (window.external) {
		window.external.AddFavorite(self.location, "Your supply cupboard - login page")
	} else { 
		alert("Sorry! Your browser doesn't support this function. Please use the browser menu to to add this site to your favorites");
	}
}
/************************************************************/
/*Animation*/
function opacity(id, opacStart, opacEnd, millisec) {

    //speed for each frame
    var speed = Math.round(millisec / 100);
    var timer = 0;

    //determine the direction for the blending, if start and end are the same nothing happens
    if(opacStart > opacEnd) {
        if (speed != 0 ){
			for(i = opacStart; i >= opacEnd; i--) {
				setTimeout("changeOpac(" + i + ",'" + id + "')",(timer * speed));
				timer++;
			}
		}else{
			changeOpac(opacEnd, id)
		}
    } else if(opacStart < opacEnd) {
        if (speed != 0 ){			
			for(i = opacStart; i <= opacEnd; i++)
				{
				setTimeout("changeOpac(" + i + ",'" + id + "')",(timer * speed));
				timer++;
			}
		}else{
			changeOpac(opacEnd, id)
		}
    }
}

//change the opacity for different browsers
function changeOpac(opacityVal, id) {
    var object = document.getElementById(id).style;
		object.opacity = (opacityVal / 100);
		object.MozOpacity = (opacityVal / 100);
		object.KhtmlOpacity = (opacityVal / 100);
		object.filter = "alpha(opacity=" + opacityVal + ")";	
} 

function animClipDown(ref, counter)
{
 var cP = Math.pow(Math.sin(Math.PI*counter/200),0.75);
 ref.style.clip = (counter==100 ?
  ((window.opera || navigator.userAgent.indexOf('KHTML') > -1) ? '':
   'rect(auto, auto, auto, auto)') :
    'rect(0, ' + ref.offsetWidth + 'px, '+(ref.offsetHeight*cP)+'px, 0)');
};

function animFade(ref, counter)
{
 var f = ref.filters, done = (counter==100);
 if (f)
 {
  if (!done && ref.style.filter.indexOf("alpha") == -1)
   ref.style.filter += ' alpha(opacity=' + counter + ')';
  else if (f.length && f.alpha) with (f.alpha)
  {
   if (done) enabled = false;
   else { opacity = counter; enabled=true }
  }
 }
 else ref.style.opacity = ref.style.MozOpacity = counter/100.1;
};