function ExpandTextArea(textarea) {

	var browser=navigator.appName;
	var b_version=navigator.appVersion;
	var version=parseFloat(b_version);
	if ( (browser=="Microsoft Internet Explorer") && (version<=4) )
	{
		//return true;
	} else {	
		var cols=textarea.cols;
		var rows=textarea.rows;
		//in your keypress event...
		numLines = textarea.value.split("\n").length;
		if(numLines > 4){ 
			textarea.rows = numLines;
		}
		else {
			textarea.disabled = true;
			textarea.rows = 4;
			textarea.disabled = false;
		}	
	}
}

function ExpandTextBox(id) {
	
		var size = document.getElementById(id).size;
		var length = document.getElementById(id).value.length;
		document.getElementById(id).size = length + 1;

}