num: function(o,p) {
		var f,d=0,c=0
		function alter(fn) {f.val(fn(Number(f.val())));p.changed()}
		var plusOne = function(){alter(function(v){return v + 1})}
		var minusOne = function(){alter(function(v){return v - 1})}
		return [dv,{'class':'rel'},
			['input',{value:o,size:5,style:'float:left',fn:function(){
			    f=this
			    v.u.si(f,p)
			    if(isNaN(f.val())) {f.val(0)}
			    f.mousedown(function(){d=1})
			    f.mouseup(function(){d=0})
			    f.mousemove(function(e){
				if (d==1) {
				    if (e.clientY < c) {plusOne()} else {minusOne()}
				    c=e.clientY
				}
			    })
			}},
			 sp,{'class':'int_minus',fn:function(){this.click(minusOne)}},['-'],
			 sp,{'class':'int_plus',fn:function(){this.click(plusOne)}},['+']]]
	    },