function popup(URL, Width, Height) // nice and easy centred popup window command
{
	if (document.all)
	{
		Available_Width = document.body.clientWidth;
		Available_Height = document.body.clientHeight;
	}
	else if (document.layers)
	{
		Available_Width = window.innerWidth;
		Available_Height = window.innerHeight;
	}
	else
	{
		Available_Width = screen.availWidth;
		Available_Height = screen.availHeight; 
	}

	var Left = (Available_Width - Width) /2;
	var Top = (Available_Height - Height) /2;

	Popup_Window = window.open(URL, '_blank', 'width=' + Width + ',height=' + Height + ',top=' + Top + ',left=' + Left + ',toolbar=no,scrollbars=yes');
	
	return Popup_Window;
}

function isNumberKey(evt)
{
	var charCode = (evt.which) ? evt.which : event.keyCode;

	if (charCode > 31 && (charCode < 48 || charCode > 57) && charCode != 46)
		return false;

	return true;
}

String.prototype.trim = function() {
a = this.replace(/^\s+/, '');
return a.replace(/\s+$/, '');
};

var menuSlider=function(){
	var m,e,g,s,q,i; e=[]; q=8; i=8;
	return{
		init:function(j,k){
			m=document.getElementById(j); e=m.getElementsByTagName('li');
			var i,l,w,p; i=0; l=e.length;
			for(i;i<l;i++){
				var c,v; c=e[i]; v=c.value; if(v==1){s=c; w=c.offsetWidth; p=c.offsetLeft}
				c.onmouseover=function(){menuSlider.mo(this)}; c.onmouseout=function(){menuSlider.mo(s)};
			}
			g=document.getElementById(k); g.style.width=w+'px'; g.style.left=p+'px';
		},
		mo:function(d){
			clearInterval(m.tm);
			var el,ew; el=parseInt(d.offsetLeft); ew=parseInt(d.offsetWidth);
			m.tm=setInterval(function(){menuSlider.mv(el,ew)},i);
		},
		mv:function(el,ew){
			var l,w; l=parseInt(g.offsetLeft); w=parseInt(g.offsetWidth);
			if(l!=el||w!=ew){
				if(l!=el){var ld,lr,li; ld=(l>el)?-1:1; lr=Math.abs(el-l); li=(lr<q)?ld*lr:ld*q; g.style.left=(l+li)+'px'}
				if(w!=ew){var wd,wr,wi; wd=(w>ew)?-1:1; wr=Math.abs(ew-w); wi=(wr<q)?wd*wr:wd*q; g.style.width=(w+wi)+'px'}
			}else{clearInterval(m.tm)}
}};}();