_getCursorIndex for FireFox and Internet Explorer

_getCursorIndex for FireFox and Internet Explorer

getCursorIndex function works for FireFox. Hope this works for Internet Explorer also

_getCursorIndex: function() {
return this.get_element().selectionStart;
},

getCursorIndex function works for Internet Explorer

_getCursorIndex: function() {
return o.value.lastIndexOf("Your String")
},