function loginBoxHeightChange() {
var textarea = document.getElementById('tx'); // textarea.style.height = textarea.scrollHeight + 'px' textarea.style.overflowY = 'hidden' textarea.style.resize = 'none' textarea.style.backgroundColor = '#89bde5' textarea.style.border = 'none' textarea.style.textDecoration = 'underline'; textarea.readOnly = true; var newTextarea=spliter(textarea.innerHTML,20) var array= newTextarea.split("\n") if(array.length>3) { textarea.innerHTML=array[0]+" "+array[1]+" "+array[2].substring(0,19)+"..."; }else{ textarea.innerHTML=newTextarea; } } function spliter(text, max) { var strs = new Array(); strs = text.split(' '); var result = '' for (var n = 0; n < strs.length; n++) { result += splitMultiLine(strs[n], max); }; return result; } function splitMultiLine(x, max) { var strArray = ''; var num = Math.ceil(x.length / max); var array = new Array(); for (var i = 0; i < num - 1; i++) { array[i] = x.substring(max * i, max * (i + 1)); strArray += array[i] + ' '; } array[num - 1] = x.substring(max * (num - 1)); strArray += array[num - 1] + ' '; return strArray; }