// Autorius White, http://pastebin.parentnode.org/78

function emotion(text) {  
    var obj = document.getElementById('komentaras');
    if(document.selection) {  
        obj.focus();  
        var orig = obj.value.replace(/\r\n/g, "\n");  
        var range = document.selection.createRange();  
 
        if(range.parentElement() != obj) {  
            return false;  
        }  
 
        range.text = text;  
          
        var actual = tmp = obj.value.replace(/\r\n/g, "\n");  
 
        for(var diff = 0; diff < orig.length; diff++) {  
            if(orig.charAt(diff) != actual.charAt(diff)) break;  
        }  
 
        for(var index = 0, start = 0;   
            tmp.match(text)   
                && (tmp = tmp.replace(text, ""))   
                && index <= diff;   
            index = start + text.length  
        ) {  
            start = actual.indexOf(text, index);  
        }  
    } else if(obj.selectionStart) {  
        var start = obj.selectionStart;  
        var end   = obj.selectionEnd;  
 
        obj.value = obj.value.substr(0, start)   
            + text   
            + obj.value.substr(end, obj.value.length);  
    }  
      
    if(start != null) {  
        setCaretTo(obj, start + text.length);  
    } else {  
        obj.value += text;  
    }  
}  
 
function setCaretTo(obj, pos) {  
    if(obj.createTextRange) {  
        var range = obj.createTextRange();  
        range.move('character', pos);  
        range.select();  
    } else if(obj.selectionStart) {  
        obj.focus();  
        obj.setSelectionRange(pos, pos);  
    }  
}