Get <select> text using 'this' keyword

I am using following code:

<select class="element select m开发者_JS百科edium" id="inDistrict"
        name="inDistrict" onchange="setCookie('lastvalue',this.value,1);">

It is not taking: this.value. What else to use to get the DropDown selected text?

this.options[this.selectedIndex].value

var i = this.selectedIndex;
var selectedText = this.options[i].text;

Should do it (if this is the correct context).