document.write ('<center><form name="loveform"><FONT COLOR="#FF0000">T</FONT><FONT COLOR="#FFDB00">ê</FONT><FONT COLOR="#FFff00">n</FONT> <FONT COLOR="#00ff00">B</FONT><FONT COLOR="#00ffDB">ạ</FONT><FONT COLOR="#00ffff">n</FONT><font color="#33ff00">:</font><br><input name="name1" type="text" size="15" value=""onfocus="if(this.value=""/><br><FONT COLOR="#FF0000">T</FONT><FONT COLOR="#FF8000">ê</FONT><FONT COLOR="#FFff00">n</FONT> <FONT COLOR="#00ff00">N</FONT><FONT COLOR="#00ff80">g</FONT><FONT COLOR="#00ffff">ư</FONT><FONT COLOR="#0080ff">ờ</FONT><FONT COLOR="#0000ff">i</FONT> <FONT COLOR="#FF00ff">Ấ</FONT><FONT COLOR="#FF0080">y</FONT></b><br><input name="name2" type="text" size="15" value=""onfocus="if(this.value="Khổng Tú Quỳnh"/><br><FONT COLOR="#FF0000">C</FONT><FONT COLOR="#FF6600">ơ</FONT> <FONT COLOR="#FFff00">H</FONT><FONT COLOR="#99ff00">ộ</FONT><FONT COLOR="#33ff00">i</FONT> <FONT COLOR="#00ff66">Y</FONT><FONT COLOR="#00ffCC">ê</FONT><FONT COLOR="#00ffff">u</FONT> <FONT COLOR="#0066ff">N</FONT><FONT COLOR="#0000ff">h</FONT><FONT COLOR="#3300ff">a</FONT><FONT COLOR="#9900ff">u</FONT><font color="#33ff00">:</font><br><input value name="output" type="text" size="6"> <input value="Kết Quả" name="calculate" type="button" value="calculate"  onclick="calc()"></form></center>');

function calc() {

first = document.loveform.name1.value.toUpperCase();
firstlength = document.loveform.name1.value.length;
second = document.loveform.name2.value.toUpperCase();
secondlength = document.loveform.name2.value.length;
var LoveCount=0;

for (Count=0; Count < firstlength; Count++) {



letter1=first.substring(Count,Count+1);

if (letter1=='L') LoveCount+=2; 
if (letter1=='O') LoveCount+=2; 
if (letter1=='V') LoveCount+=2;
if (letter1=='E') LoveCount+=2; 
if (letter1=='Y') LoveCount+=3; 
if (letter1=='O') LoveCount+=1; 
if (letter1=='U') LoveCount+=3;
}


for (Count=0; Count < secondlength; Count++) {
letter2=second.substring(Count,Count+1);
if (letter2=='L') LoveCount+=2;
if (letter2=='O') LoveCount+=2; 
if (letter2=='V') LoveCount+=2; 
if (letter2=='E') LoveCount+=2;
if (letter2=='Y') LoveCount+=3;
if (letter2=='O') LoveCount+=1;
if (letter2=='U') LoveCount+=3;
}

amount=0;

if (LoveCount> 0) amount=  5-((firstlength+secondlength)/2)
if (LoveCount> 2) amount= 10-((firstlength+secondlength)/2)
if (LoveCount> 4) amount= 20-((firstlength+secondlength)/2)
if (LoveCount> 6) amount= 30-((firstlength+secondlength)/2)
if (LoveCount> 8) amount= 40-((firstlength+secondlength)/2)

if (LoveCount>10) amount= 50-((firstlength+secondlength)/2)

if (LoveCount>12) amount= 60-((firstlength+secondlength)/2)
if (LoveCount>14) amount= 70-((firstlength+secondlength)/2)
if (LoveCount>16) amount= 80-((firstlength+secondlength)/2)
if (LoveCount>18) amount= 90-((firstlength+secondlength)/2)
if (LoveCount>20) amount=100-((firstlength+secondlength)/2)
if (LoveCount>22) amount=110-((firstlength+secondlength)/2)
if (firstlength==0 || secondlength==0) amount= "Err";
if (amount < 0) amount= 0;
if (amount >99) amount=99;

document.loveform.output.value=amount+"%";



}