Киньте плиз какой-нить примерчик, где с конкатенацией строк.

<br>
<div style="font-family: Arial; font-size: 16; font-weight: bold;" onMouseOver="s1.style.color='#B5DEE5'; s2.style.color='#97DCE9'; s3.style.color='#53D3EA'; s4.style.color='#1AB7D3'; s5.style.color='#1A9FB7'; s6.style.color='#067F95'" onMouseOut="s1.style.color='#067F95'; s2.style.color='#1A9FB7'; s3.style.color='#1AB7D3'; s4.style.color='#53D3EA'; s5.style.color='#97DCE9'; s6.style.color='#B5DEE5'">

<span id="s1" style="color='#067F95'">6</span>
<span id="s2" style="color='#1A9FB7'">e</span>
<span id="s3" style="color='#1AB7D3'">p</span>
<span id="s4" style="color='#53D3EA'">k</span>
<span id="s5" style="color='#97DCE9'">y</span>
<span id="s6" style="color='#B5DEE5'">T</span>
</div>