form.submit中控制。。。。<html><script language=javascript>function dosubmit(){         window.open("first.php?var1="+window.form.var1.value+"&var2="+window.form.var2.value);         window.open("second.php?var1="+window.form.var1.value+"&var2="+window.form.var2.value);         return false;}</script><form name=form onsubmit="return dosubmit();"><input type=text name=var1><br><input type=text name=var2><br><input type=submit></form>