function num(elem, prop) {
	return elem[0] && parseInt( jQuery.curCSS(elem[0], prop, true), 10 ) || 0;
}
function num(elem, prop) {
	return elem[0] && parseInt( jQuery.curCSS(elem[0], prop, true), 10 ) || 0;
}
function num ( elem , prop ) { return elem [ 0 ] && parseInt ( jQuery . curCSS ( elem [ 0 ] , prop , true ) , 10 ) || 0 ; }
Helper function used by the dimensions and offset modules
Helper function used by the dimensions and offset modules
Get the number of elements in the DOM