space and tab(removal) in xsl:attribute

[tasos]

Hello people and nice to meet you.
Using visual studio i have a major problem editing xsl files.
When using:
<xsl:attribute name='onclick'>
space character space character space character alert('foo'); tab character tab character
</xsl:attribute>
The space or tabs(of course in visual studio i can convert tabs to spaces but it doesn't help) are included in the event.So this creates problems in id(for example) elements.
Is it possible by using the oxygen editor to remove spaces or tabs?