var i=2;
var oElement1;
var oElement2;
var oElement3;
var oElement4;
var id1="dgdEducation__ctl"+String(i)+"_cboBeginYear";
var id2="dgdEducation__ctl"+String(i)+"_cboBeginMonth";
var id3="dgdEducation__ctl"+String(i)+"_cboEndYear";
var id4="dgdEducation__ctl"+String(i)+"_cboEndMonth";
while( document.getElementById(id2) == null)
{
i++;
var id1="dgdEducation__ctl"+String(i)+"_cboBeginYear";
var id2="dgdEducation__ctl"+String(i)+"_cboBeginMonth";
var id3="dgdEducation__ctl"+String(i)+"_cboEndYear";
var id4="dgdEducation__ctl"+String(i)+"_cboEndMonth";
}
var oElement1 = document.getElementById(id1);
var oElement2 = document.getElementById(id2);
var oElement3 = document.getElementById(id3);
var oElement4 = document.getElementById(id4);