Using data from a MySQL database

Here is the piece of my code:

if (this[''projectName''+three] != '''') {

_global.projectFile3 = this[''projectFile''+three];

heading3_txt.htmlText = this[''projectName''+three];

content3_txt.htmlText = this[''description''+three];

if (this[''thumbnail''+three] != '''') {

picHolder3_mc.loadMovie(''images/''+this[''thumbnail''+three]);

}

} else if (this[''projectName''+three] == '''') {

content3_txt.htmlText = '''';

heading3_txt.htmlText = '''';

}



It is for a portfolio thingie i am working on. My script
pulls the data from the db three at a time and displays it. the
problem is on the last ''else if'' statment. If there is only 2 items
left to display, the third listing is suppose to put in blanks, but
instead it places ''undefined'' in both instances. Any ideas?
thanks...