function cnt(w,c){
	var y=w.value;
	var r = 0;
	a=y.replace(/\s/g,' ');
	a=a.split(' ');
	for (z=0; z<a.length; z++) {if (a[z].length > 0) r++;}
	document.getElementById(c).innerHTML = r;
} 

function check_cnt(id,submit){
	var cnt = document.getElementById(id).innerHTML;
	if (cnt >= 20) {document.getElementById(submit).disabled=false; return false;}
	if (cnt < 20)  {document.getElementById(submit).disabled=true; return true;}
}